Code didn't calculate the right time execution of function in C - c

I have searched for how to calculate the execution time of a program, and i have done exactly in describe of these topic
Execution time of C program
Calculating time of execution with time() function
but my code didn't count the time execution and i don't know why.
here are my code
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
int main(int argc, char** argv) {
time_t begin, end;
begin = clock();
int c = 0;
for (int i = 0; i < 255; i++) {
printf("%d ",c++);
}
end = clock();
printf("\n");
double timeTaken = ((double) (end - begin)) / CLOCKS_PER_SEC;
printf("time taken: %lf", timeTaken);
return (EXIT_SUCCESS);
}
here are what it printed
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53
54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78
79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102
103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121
122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140
141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159
160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178
179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197
198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216
217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235
236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254
time taken: 0.000000
I have checked many times for error, but it still print "time taken: 0.000000". Can you guys help me out? Thanks a lot.

Actually, you are iterating loop for a small number of times. Try iterating the loop for large number of times. Eg. iterate for 1e9 times. Then you will get noticeable time period. Modern processors are very fast, such that they have frequency upto 2.9 GHz or more, which mean that they can execute around 2 billion instructions, if available, within a second.

Related

excel search value in a table and return another value

I need to search in a table a value and reurn the value of the last column of the corresponding row (I can transverse rows and columns if it is going to simplify the functions). For example, I have the following table and when I give as the search value 75, I want to have the value 204 (value of the last column of the same row). The last column can be also moved to be the first one, in case it helps the function. I tried with Index and Match and Lookup but these functions need one column array to search into.
41 42 43 44 61 62 63 64 81 82 83 84 101 102 103 104 201
45 46 47 48 65 66 67 68 85 86 87 88 105 106 107 108 202
49 50 51 52 69 70 71 72 89 90 91 92 109 110 111 112 203
53 54 55 56 73 74 75 76 93 94 95 96 113 114 115 116 204
57 58 59 60 77 78 79 80 97 98 99 100 117 118 119 120 205
121 122 123 124 141 142 143 144 161 162 163 164 181 182 183 184 216
125 126 127 128 145 146 147 148 165 166 167 168 185 186 187 188 217
129 130 131 132 149 150 151 152 169 170 171 172 189 190 191 192 218
133 134 135 136 153 154 155 156 173 174 175 176 193 194 195 196 219
=INDEX($Q$1:$Q$9,AGGREGATE(14,6,1/($A$1:$P$9=R12)*ROW($A$1:$P$9),1))
If first row of table not Row 1, see note below for adjustment
How it works:
($A$1:$P$9=R12) returns a 2D array of FALSE with a TRUE at the point of equality.
1/... returns an array of #DIV/0! and a 1 for the TRUE
Multiply by ROW(...) to get the row number
Use that row number to INDEX into the table.
Note that if the table does not start in Row 1, you need to subtract the first row of the table (-1) from the calculated row number.
If you use a Table or a named range, this can be made dynamic.
Edit: simpler formula
If you will only ever need to have a single result (eg all entries in the table will be unique, you can use:
=INDEX($Q$1:$Q$9,MAX(($A$1:$P$9=R12)*ROW($A$1:$P$9)))
I would use index() with match() like so:
So, used iferror() with match() to check each column and return the position if found, if not then blank.
Then index() with max() to get the position found and return the value from column Q.
Formula in cell A15 dragged to P15 is
IFERROR(MATCH($S$2,A4:A12,0),"")
Formula in cell T2 is
INDEX(Q4:Q12,MAX(A15:P15))
Cell S2 is the value you are looking for.

C - extract comma separated strings from file into array - segmantation fault

I need to read from a file different strings that are comma-separated and storage them into an array.
I have the following code, that I developed reading different questions online.
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int main (){
int N = 200; // Number of sequences
int L = 1000; // length of sequences
char Nseq[N][L];
FILE *myfile;
char *token;
const char s[2] = ",";
char line[300];
char* filename = "pathofile.txt";
int n = 0;
myfile = fopen(filename, "r");
if (myfile == NULL) {printf("could not open file %s", filename); exit(0);}
while (fgets(line, sizeof(line), myfile) != NULL){
token = strtok(line, s);
while (token != NULL){
strcpy(Nseq[n], token);
printf("%s\t%u\n", token, n);
token = strtok(NULL, s);
n++;
}
}
fclose(myfile);
for (int n=0; n<100; n++){
printf ("%s\t%u\n", Nseq[n], n);}
}
my file is the following (there are 200 sequences):
AAAGCCGCCAAAGUAGGCGG,AAAGCCGCCAAAGUAGGCGG,AAAGCCGCCAAAGUAGGCGG,AAAGCCGCCAAAGUAGGCGG,AAAGCCGCCAAAGUAGGCGG,AAAGCCGCCAAAGUAGGCGG,AAAGCCCGCCAAAGAAGGCGG,AAAGCCCGCCAAAGAAGGCGG,AAAGCCCGCCAAAGAAGGCGG,AAAGCCCGGCCAAAGAAGGCGG,AAAGCCCGCCAAAGUAGGCGG,AAAGCCCGCCAAAGUAGGCGG,AAAGCCCGCCAGAAGUAGGCGG,AAAGCCCGCCAAAGUAGGCGG,AAAGCCCGCCAAAGUAGGCGG,AAAGCACCGCCAAUGGGCGG,AAAGCACCGCCAAUAGGCGG,AAAGCACCGCCAAUAGGCGG,AUAGCACCGCCAAUAGGCGG,AUAGCACCGCCAAUAGGCGG,AUAGCACCGCCAGUAGGCGG,AUAGCACCGCCAAUAGGCGG,AAAGCACCGCCAAAUAAGGCGGG,AAAGCACCGCCAAAUAAGGCGGG,AAAGCACCGCCAAAUAGGCGGG,AAAGCACCGCCAAAUAAGGCGG,AAAGCACCGCCAAAUAAGGCGG,AAAGCACCGCCAAAUAAGGCGG,AAAGCACCGCCAAAUAAGGCGG,AAAGCACCGCCAAAUAAGGCGG,AAAGCACCGCCAAAUAAGGCGG,AAAGCACCGCCAAAUAAGGCGG,AAAGCACCGCCAAAUAAGGCGG,AAAGCACCGCCAAAUAAGGCGG,AAAGCACCGCCAAAUAAGGCGG,AAAGCACCGCCAAAUAAGGCGG,AAAGCACCGCCAAAUAAGGCGG,AAAGCACCGCCAAAUAAGGCGG,AAAGCACCGCCAAAUAAGGCGG,AAAGCACCGCCAAAUAAGGCGG,AAAGCACCGCCAAAUAAGGCGG,AAAGCACGGCCAAAUAAGGCGG,AAAGCACCGCCAAAUAAGGCGG,AAAGCACCGCCAAUAAGGCGG,AAAGCACCGCCAAAAGUCGAGGCGG,AAAGCACCGCCAAAAUGUGAGGCGG,AAAGCACCGCCAAAUGUGAGGCGG,AAAGCACCGCCAAAAUGGUGAGGCGG,AAAGCACCGCCAAAAGUGAGGCGG,AAAGCACCGCCAAAAGUGAGGCGG,AAAGCACCGCCAAAAGUGAGGCGG,AAAGCACCGCCAAAAGUGAGGCGG,AAAGCACCGCCAAAAGUAAGGCGG,AAAGACCGCCAAAAGUAAGGCGG,AAAGCACCGCCAAAAGUAAGGCGG,AAAGCACCGCCAAAAGUAAGGCGG,AAAGCACCGCCAAAGUUAAGGCGG,AAAGCACCGCCAAAGUAAGGCGG,AAAGCACCGCCAAAGUAAGGCGG,AAAGCACCGCCAAAGUAAGGCGG,UAACGCCGGCCAACUAGGGCGG,AACAGCCCGGCCAAAUAGGGCGG,AAAGCCGCCAAACUGGCGG,AAAGCCGCCAAACUGGCGG,AAACCGCCCAAAUAGGCGG,AAAGCCGCCCAAAUAGGCGG,AAAGCCGCCCAAAUAGGCGG,AAAGCCGCCAAAUAGGCGG,AAAGCCGCCAAAUAGGCGG,AAAGCCGCCCAAAUAGGCGG,AAAUCCGCCCAAAUAGGCGG,UAAAGCCGCCCUAAAUAGGCGG,AAAGCCGCGCAAAUAGGCGG,AAAGCCGCCCCAAAUAGGCGG,AAAGCCGCCCCAAAUAGGCGG,AAAGCCGCCCAAAUAGGCGUG,AAAGCCGCCCAAAUAGGCGG,AAAGCCGCCCAAAUAGGCGG,AAAGCCGCCCAAAUAGGCGG,AAAGCCGCCCAAAUAGGCGG,AAAGCCGCCAAAUAGGCGG,AAAGCCGCCAAAUAGGCGG,AAAGCCGCCAAAUAGGCGG,AAAGCCGCCCAAAUAGGCGG,AAAGCCGCCAAAUGGCGGA,AAAGCCGCCAACCGGCGG,AAAGCCGCCAACCGGCGG,AAAGCCGCCAACCGGCGG,AAAGCCGUCAACCGGCGG,AAAGCCGCCAACCGGCGG,AAAGCCGCCAACCGGCGG,AAAGCGCCAACCGGCGG,AAAGCCGCCAACCGGCGG,AAAGCCGCCAACCGGCGG,AAAGCCGCCAACCGGCGG,CACUGCCGGCCAAGUCGGCGG,CAUUGCCGGCCAAGUCGGCGG,CACUGCCGGCCAAGUCGGCGG,CAUGCCGGCCAAGUCGGCGG,CACUCCGGCCAAGUCGGCGG,CACUGCCGGCCAAGUCGGCGG,CACUGCCGGACCAAGUCGGCGG,CACUGCCGGCCAAGUCGGCGG,UCAAUUGCCGGCCAAGUCGGCGG,UCAAUUGCCGGCCAAGUCGGCGG,UUUAAGGCCGCACAUGCGGCCGUG,UUAAGGCCGGAAACAUUCGGCCGUG,UUAAGGCCGCACAUUCGGCCGGG,UUAAGGCCGCACAUUCGGCCGGG,UUAAGGCCGCACAUUCGGCCGGG,UUAAAAGGCCGACAUUGCGGCCGGG,UUAAAGGCCGACAUUGCGGCCGGG,UUAAGUCCGCACAUUCGGCCGGG,UUAAGGCCGCACAUUCGGCCGGG,UUAAGGCCGCACAUUCGGCCGGG,UUAAGGCCGCACAUUCGGCCGGG,UUAAGGCCGCACAUUCGGCCGGG,UUAAGGCCGCACAUCGGCCGGG,UAAGGCCGCACAUUCGGCCGGG,UAAGGCCGCACAUUCGGCCGGG,UAAGGCCGGCACAUUCGGCCGGG,UAAGGCCGCACAUUCGGCCGGG,UAAGGCCGCACAUUCGGCCGGG,UAAGGCCGCACAUUCGGCCGGG,UAAGGCCGCACAUUCGGCCGGG,UAAGGCCGCACAUUCGGCCGGG,UAAGGCCGCACAUGUCGGCCGGGU,UAAGGCCGCACAUUCGGCCGGG,UAAGGCCGCACAUUCGGCCGGG,UAGGCCGCAAGUCGGCCGGG,UAGGCCGCAAGCGGCCGGG,UAGGCCGCAAGCGGCCGGG,UAGGCCGCAAGCGGCCGGG,UAGGCCGCAAGUCGGCCGGG,UAGGCCGCAAGUCGGCCGGG,UAGGCCGCAAGUCGGCCGGG,UAGGCCGCAAGUCGGCCGGG,GAUCGGCCGGCAGCCUCCCGGCGG,GAUCGGCCGGCAGCCUCCCGGCGG,GAUCGGCCGGCAGCCUCCCGGCGG,GAUCGGCCGGCAGCCUCCCGGCGG,GAUCGGCCCGGCAGCCUCCCGGCGG,GAUCGGCCCGGCAGCCUCCCGGCGG,GAUCGGCCGGCAGCCGUACCGGCGG,AGAUCGGCCGGCAGCCGUACCGGCGG,GAUCGGCCGGCAGCCGUACCGGCGG,UAUCGGCCGGCACCGUACCGGGGG,UAUCGGCCGGCACCGUACCGGCGGG,UAUCGGCGGCACCGUACCGGCGGG,UAUCGGCCGGCACCGUACCGGCGGG,UAUCGCCGGCACCGUACCGGCGGG,AUUAGGGCCGCCAUAACGGCGG,AUUAGGGCCGCCAAUAACGGCGG,AUUAGGGCCGCCUAUAACGGCGG,GUGUUGCGUGCCGCCUUAAGGCG,GUGUUGCGUGCGCCUUAAGGCG,GUGUUGCGUGCCGCCUUAAGGCG,GUGUUGCGUGCCGCCUUAAGGCG,GUGUUGCGUGCCGCCUUAAGGCG,GUGUUGCGUGCCGCCUUAAGGCG,GUGUUGCGUGCCGCCUUAAGGCG,GUGUUGCGUGCCGUCUGAAGGCG,GUGUUGCGUGCCGCCUUAAUGCG,GUGUUGCGUGCCGCCUUAAGGCG,GUGUUGCGUGCCGCCUUAAGGCG,GUGUUGCGUGCCGCCUUAAGGCG,GUGUUGCGUGCCGCCUUAAGGCG,GUGUUGCGUGCCGCCUUAAGGCG,GUGUUGCGUGCCGCCUUAAGGCG,GUGUUGCGUGCCGCCCUUAAGGCG,GUGUUGCGUGCCGCCUUAAGGCG,GUGUUGCGUGCCGCCUUAAGGCG,GUGUUGCGUGCGCCUUAAGGCG,CUGUUGCGUGCCGCCUUAAGGCG,CUGUUGCGUGCCGCCUUAAGGCG,CUGUUGCGUGCCGCCUUAAGGCG,GUGUUGCGUGCCGCCGUUACAGGCG,GUGUUGCGUGCCGCCGUUACAGGCG,GUGUUGCGUGCCGCCUUAAGGCG,GUGUUGCGUGCCGCCUUAAGGCG,GUGUUGCGUGCCGCCUUAAGGCG,UUGGUCCGCCUUACGGCGGG,UUGGUCCGCCUUACGGCGGG,UUGGUCCGCCUUACGGCGGG,UUGGUCCGCCUUACGGCGGG,UUCGUCCGCCUUACGGCGGG,GUUGUAGCCCGCCUUCGGCGGG,GUUGUUGCCGCCUUACGGCGG,GUUGUUGCCGCCUUACGGCGG,GUUGUUGCCGCCUUACGGCGG,GUUGUUGCCGCCUGACGGCGG,GUUGUUGCCGCCUGACGGCGG,GUUGUUGCCGCCUGACGGCGG,GUUGUUGCCGCCUGACGGCGG,GUUGUUUGCCGCCUGACGGCGG,GUUCCUUGCCAGCCUUACGGCGG,CUUGCGCCGCCUUACGGCGUG,CUUGCGCCGCCUUACGGCGUG,CUUGCGCCGCCUUACGGCGUG,CUUGCGCAGCCUUACGGCGUG,
and when I run the code I get:
AAAGCCGCCAAAGUAGGCGG 0
AAAGCCGCCAAAGUAGGCGG 1
AAAGCCGCCAAAGUAGGCGG 2
AAAGCCGCCAAAGUAGGCGG 3
AAAGCCGCCAAAGUAGGCGG 4
AAAGCCGCCAAAGUAGGCGG 5
AAAGCCCGCCAAAGAAGGCGG 6
AAAGCCCGCCAAAGAAGGCGG 7
AAAGCCCGCCAAAGAAGGCGG 8
AAAGCCCGGCCAAAGAAGGCGG 9
AAAGCCCGCCAAAGUAGGCGG 10
AAAGCCCGCCAAAGUAGGCGG 11
AAAGCCCGCCAGAAGUAGGCGG 12
AAAGCCCGCCAAAGUAG 13
GCGG 14
AAAGCCCGCCAAAGUAGGCGG 15
AAAGCACCGCCAAUGGGCGG 16
AAAGCACCGCCAAUAGGCGG 17
AAAGCACCGCCAAUAGGCGG 18
AUAGCACCGCCAAUAGGCGG 19
AUAGCACCGCCAAUAGGCGG 20
AUAGCACCGCCAGUAGGCGG 21
AUAGCACCGCCAAUAGGCGG 22
AAAGCACCGCCAAAUAAGGCGGG 23
AAAGCACCGCCAAAUAAGGCGGG 24
AAAGCACCGCCAAAUAGGCGGG 25
AAAGCACCGCCAAAUAAGGCGG 26
AAAGCACCGCCAAAUAAGGCGG 27
AAAGCACC 28
GCCAAAUAAGGCGG 29
AAAGCACCGCCAAAUAAGGCGG 30
AAAGCACCGCCAAAUAAGGCGG 31
AAAGCACCGCCAAAUAAGGCGG 32
AAAGCACCGCCAAAUAAGGCGG 33
AAAGCACCGCCAAAUAAGGCGG 34
AAAGCACCGCCAAAUAAGGCGG 35
AAAGCACCGCCAAAUAAGGCGG 36
AAAGCACCGCCAAAUAAGGCGG 37
AAAGCACCGCCAAAUAAGGCGG 38
AAAGCACCGCCAAAUAAGGCGG 39
AAAGCACCGCCAAAUAAGGCGG 40
AAAGCACCGCCAAAUAAGGCGG 41
AAAGCACC 42
GCCAAAUAAGGCGG 43
AAAGCACGGCCAAAUAAGGCGG 44
AAAGCACCGCCAAAUAAGGCGG 45
AAAGCACCGCCAAUAAGGCGG 46
AAAGCACCGCCAAAAGUCGAGGCGG 47
AAAGCACCGCCAAAAUGUGAGGCGG 48
AAAGCACCGCCAAAUGUGAGGCGG 49
AAAGCACCGCCAAAAUGGUGAGGCGG 50
AAAGCACCGCCAAAAGUGAGGCGG 51
AAAGCACCGCCAAAAGUGAGGCGG 52
AAAGCACCGCCAAAAGUGAGGCGG 53
AAAGCACCGCCAAAAGUGAGGCGG 54
AAAGCACCGCCA 55
AAAGUAAGGCGG 56
AAAGACCGCCAAAAGUAAGGCGG 57
AAAGCACCGCCAAAAGUAAGGCGG 58
AAAGCACCGCCAAAAGUAAGGCGG 59
AAAGCACCGCCAAAGUUAAGGCGG 60
AAAGCACCGCCAAAGUAAGGCGG 61
AAAGCACCGCCAAAGUAAGGCGG 62
AAAGCACCGCCAAAGUAAGGCGG 63
UAACGCCGGCCAACUAGGGCGG 64
AACAGCCCGGCCAAAUAGGGCGG 65
AAAGCCGCCAAACUGGCGG 66
AAAGCCGCCAAACUGGCGG 67
AAACCGCCCAAAUAGGCGG 68
AAAGCCGC 69
CCAAAUAGGCGG 70
AAAGCCGCCCAAAUAGGCGG 71
AAAGCCGCCAAAUAGGCGG 72
AAAGCCGCCAAAUAGGCGG 73
AAAGCCGCCCAAAUAGGCGG 74
AAAUCCGCCCAAAUAGGCGG 75
UAAAGCCGCCCUAAAUAGGCGG 76
AAAGCCGCGCAAAUAGGCGG 77
AAAGCCGCCCCAAAUAGGCGG 78
AAAGCCGCCCCAAAUAGGCGG 79
AAAGCCGCCCAAAUAGGCGUG 80
AAAGCCGCCCAAAUAGGCGG 81
AAAGCCGCCCAAAUAGGCGG 82
AAAGCCGCCCAAAUAGGCGG 83
AAAGCCGCCC 84
AAAUAGGCGG 85
AAAGCCGCCAAAUAGGCGG 86
AAAGCCGCCAAAUAGGCGG 87
AAAGCCGCCAAAUAGGCGG 88
AAAGCCGCCCAAAUAGGCGG 89
AAAGCCGCCAAAUGGCGGA 90
AAAGCCGCCAACCGGCGG 91
AAAGCCGCCAACCGGCGG 92
AAAGCCGCCAACCGGCGG 93
AAAGCCGUCAACCGGCGG 94
AAAGCCGCCAACCGGCGG 95
AAAGCCGCCAACCGGCGG 96
AAAGCGCCAACCGGCGG 97
AAAGCCGCCAACCGGCGG 98
AAAGCCGCCAACCGGCGG 99
AAAGCCGCCAACCGGCG 100
G 101
CACUGCCGGCCAAGUCGGCGG 102
CAUUGCCGGCCAAGUCGGCGG 103
CACUGCCGGCCAAGUCGGCGG 104
CAUGCCGGCCAAGUCGGCGG 105
CACUCCGGCCAAGUCGGCGG 106
CACUGCCGGCCAAGUCGGCGG 107
CACUGCCGGACCAAGUCGGCGG 108
CACUGCCGGCCAAGUCGGCGG 109
UCAAUUGCCGGCCAAGUCGGCGG 110
UCAAUUGCCGGCCAAGUCGGCGG 111
UUUAAGGCCGCACAUGCGGCCGUG 112
UUAAGGCCGGAAACAUUCGGCCGUG 113
UUAAGGCCGCACAUUCGGCCGGG 114
UUAAGGCCGCACAUUCGGCCGGG 115
UUAAGGCCGCACAUUCGGCCGGG 116
UUAAAAGGCCGACAUUGCGGCCGGG 117
UUAAAGGCCGACAUUGCGGCCGGG 118
UUAAGUCCGCACAUUCGGCCGGG 119
UUAAGGCCGCACAUUCGGCCGGG 120
UUAAGGCCGCACAUUCGGCCGGG 121
UUAAGGCCGCACAUUCGGCCGGG 122
UUAAGGCCGCACAUUCGGCCGGG 123
UUAAGGCCGCACAUCGGCCGGG 124
UAAGGCCGCACAUUCGGCCGGG 125
UAAGGCCGCACAUUCGGCCGGG 126
UAAGGCCGGC 127
ACAUUCGGCCGGG 128
UAAGGCCGCACAUUCGGCCGGG 129
UAAGGCCGCACAUUCGGCCGGG 130
UAAGGCCGCACAUUCGGCCGGG 131
UAAGGCCGCACAUUCGGCCGGG 132
UAAGGCCGCACAUUCGGCCGGG 133
UAAGGCCGCACAUGUCGGCCGGGU 134
UAAGGCCGCACAUUCGGCCGGG 135
UAAGGCCGCACAUUCGGCCGGG 136
UAGGCCGCAAGUCGGCCGGG 137
UAGGCCGCAAGCGGCCGGG 138
UAGGCCGCAAGCGGCCGGG 139
UAGGCCGCAAGCGGCCGGG 140
UAGGCCGCAAGUCGGCCG 141
GG 142
UAGGCCGCAAGUCGGCCGGG 143
UAGGCCGCAAGUCGGCCGGG 144
UAGGCCGCAAGUCGGCCGGG 145
GAUCGGCCGGCAGCCUCCCGGCGG 146
GAUCGGCCGGCAGCCUCCCGGCGG 147
GAUCGGCCGGCAGCCUCCCGGCGG 148
GAUCGGCCGGCAGCCUCCCGGCGG 149
GAUCGGCCCGGCAGCCUCCCGGCGG 150
GAUCGGCCCGGCAGCCUCCCGGCGG 151
GAUCGGCCGGCAGCCGUACCGGCGG 152
AGAUCGGCCGGCAGCCGUACCGGCGG 153
GAUCGGCCGGCAGCCGUACCGGCGG 154
UA 155
UCGGCCGGCACCGUACCGGGGG 156
UAUCGGCCGGCACCGUACCGGCGGG 157
UAUCGGCGGCACCGUACCGGCGGG 158
UAUCGGCCGGCACCGUACCGGCGGG 159
UAUCGCCGGCACCGUACCGGCGGG 160
AUUAGGGCCGCCAUAACGGCGG 161
AUUAGGGCCGCCAAUAACGGCGG 162
AUUAGGGCCGCCUAUAACGGCGG 163
GUGUUGCGUGCCGCCUUAAGGCG 164
GUGUUGCGUGCGCCUUAAGGCG 165
GUGUUGCGUGCCGCCUUAAGGCG 166
GUGUUGCGUGCCGCCUUAAGGCG 167
GUGUUGCG 168
UGCCGCCUUAAGGCG 169
GUGUUGCGUGCCGCCUUAAGGCG 170
GUGUUGCGUGCCGCCUUAAGGCG 171
GUGUUGCGUGCCGUCUGAAGGCG 172
GUGUUGCGUGCCGCCUUAAUGCG 173
GUGUUGCGUGCCGCCUUAAGGCG 174
GUGUUGCGUGCCGCCUUAAGGCG 175
GUGUUGCGUGCCGCCUUAAGGCG 176
GUGUUGCGUGCCGCCUUAAGGCG 177
GUGUUGCGUGCCGCCUUAAGGCG 178
GUGUUGCGUGCCGCCUUAAGGCG 179
GUGUUGCGUGCCGCCCUUAAGGCG 180
GUGUUGCGUGCCGCCUUA 181
AGGCG 182
GUGUUGCGUGCCGCCUUAAGGCG 183
GUGUUGCGUGCGCCUUAAGGCG 184
CUGUUGCGUGCCGCCUUAAGGCG 185
CUGUUGCGUGCCGCCUUAAGGCG 186
CUGUUGCGUGCCGCCUUAAGGCG 187
GUGUUGCGUGCCGCCGUUACAGGCG 188
GUGUUGCGUGCCGCCGUUACAGGCG 189
GUGUUGCGUGCCGCCUUAAGGCG 190
GUGUUGCGUGCCGCCUUAAGGCG 191
GUGUUGCGUGCCGCCUUAAGGCG 192
UUGGUCCGCCUUACGGCGGG 193
UUGGUCCGCCUUACGGCGGG 194
UUGGUCCG 195
CCUUACGGCGGG 196
UUGGUCCGCCUUACGGCGGG 197
UUCGUCCGCCUUACGGCGGG 198
GUUGUAGCCCGCCUUCGGCGGG 199
GUUGUUGCCGCCUUACGGCGG 200
GUUGUUGCCGCCUUACGGCGG 201
GUUGUUGCCGCCUUACGGCGG 202
GUUGUUGCCGCCUGACGGCGG 203
GUUGUUGCCGCCUGACGGCGG 204
GUUGUUGCCGCCUGACGGCGG 205
GUUGUUGCCGCCUGACGGCGG 206
GUUGUUUGCCGCCUGACGGCGG 207
GUUCCUUGCCAGCCUUACGGCGG 208
Segmentation fault (core dumped)
I know I have to solve the new line issue, but I don't know why do I get the segmentation fault. Because it seems to work but I don't get to the end of the file. Any ideas of what is causing this? Thank you
Because of the (arbitrary) size of your read buffer, you are splitting some sequences, so that your program sees more than 200 of them, and thus your array to hold them is too small.
char Nseq[N][L]; // N = 200;
It means that Nseq can store at most 200 sequences. But in your code, the value of n (in while loop) ups to 208 at least. To avoid the problem, you can define N more than 208 (N = 300, for example), or you have to add one condition for n in while loop condition as below:
while (fgets(line, sizeof(line), myfile) && n < 200) {...}
If you want to read all text in the file, you can use double pointer: char **Nseq, then realloc for it after each iteration of while loop:
char **Nseq;
while (fgets(line, sizeof(line), myfile)){
token = strtok(line, s);
while (token != NULL){
Nseq = realloc(Nseq, sizeof(char *) * (n+1));
if(!Nseq) {return -1;}
Nseq[n] = malloc(strlen(token) + 1);
if(!Nseq[n]) {return -1;}
strcpy(Nseq[n], token);
printf("%s\t%u\n", token, n);
n++;
token = strtok(NULL, s);
}
}

How to send a keystroke with a LUA script?

How do you send a keystroke using a .lua script?
i.e. Trigger a F7 keypress (or any key).
My specific environment is Windows 64bit and running a lua script within OBS Studio(but I guess the environment doesn't matter).
I just started playing with this for one of my sons games and I came across this list. Use
keypress(101) would send the keypress "E"
Here is the list via raw pastebin link containing all codes and the corresponding keys.
https://pastebin.com/raw/h13kPdD3
Unknown
0
Backspace
8
Tab
9
Clear
12
Return
13
Pause
19
Escape
27
Space
32
QuotedDouble
34
Hash
35
Dollar
36
Percent
37
Ampersand
38
Quote
39
LeftParenthesis
40
RightParenthesis
41
Asterisk
42
Plus
43
Comma
44
Minus
45
Period
46
Slash
47
Zero
48
One
49
Two
50
Three
51
Four
52
Five
53
Six
54
Seven
55
Eight
56
Nine
57
Colon
58
Semicolon
59
LessThan
60
Equals
61
GreaterThan
62
Question
63
At
64
LeftBracket
91
BackSlash
92
RightBracket
93
Caret
94
Underscore
95
Backquote
96
A
97
B
98
C
99
D
100
E
101
F
102
G
103
H
104
I
105
J
106
K
107
L
108
M
109
N
110
O
111
P
112
Q
113
R
114
S
115
T
116
U
117
V
118
W
119
X
120
Y
121
Z
122
LeftCurly
123
Pipe
124
RightCurly
125
Tilde
126
Delete
127
KeypadZero
256
KeypadOne
257
KeypadTwo
258
KeypadThree
259
KeypadFour
260
KeypadFive
261
KeypadSix
262
KeypadSeven
263
KeypadEight
264
KeypadNine
265
KeypadPeriod
266
KeypadDivide
267
KeypadMultiply
268
KeypadMinus
269
KeypadPlus
270
KeypadEnter
271
KeypadEquals
272
Up
273
Down
274
Right
275
Left
276
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Textbook C Code produces incorrrect output [duplicate]

This question already has answers here:
Convert int to double
(3 answers)
Closed 4 years ago.
I am learning C from a text. An example code provided by the author is:
#include <math.h>
main()
{ int i;
printf("\t Number \t\t Square Root of Number\n\n");
for (i=0; i<=360; ++i)
printf("\t %d \t\t\t %d \n",i, sqrt((double) i));
}
which on my computer produces an incorrect output I don't understand:
Number Square Root of Number
0 259
1 515
2 771
3 1027
4 1283
5 1539
6 1795
7 2051
8 2307
9 2563
10 2819
11 3075
12 3331
13 3587
14 3843
15 4099
16 4355
17 4611
18 4867
19 5123
20 5379
21 5635
22 5891
23 6147
24 6403
25 6659
26 6915
27 7171
28 7427
29 7683
30 7939
31 8195
32 8451
33 8707
34 8963
35 9219
36 9475
37 9731
38 9987
39 10243
40 10499
41 10755
42 11011
43 11267
44 11523
45 11779
46 12035
47 12291
48 12547
49 12803
50 13059
51 13315
52 13571
53 13827
54 14083
55 14339
56 14595
57 14851
58 15107
59 15363
60 15619
61 15875
62 16131
63 16387
64 16643
65 16899
66 17155
67 17411
68 17667
69 17923
70 18179
71 18435
72 18691
73 18947
74 19203
75 19459
76 19715
77 19971
78 20227
79 20483
80 20739
81 20995
82 21251
83 21507
84 21763
85 22019
86 22275
87 22531
88 22787
89 23043
90 23299
91 23555
92 23811
93 24067
94 24323
95 24579
96 24835
97 25091
98 25347
99 25603
100 25859
101 26115
102 26371
103 26627
104 26883
105 27139
106 27395
107 27651
108 27907
109 28163
110 28419
111 28675
112 28931
113 29187
114 29443
115 29699
116 29955
117 30211
118 30467
119 30723
120 30979
121 31235
122 31491
123 31747
124 32003
125 32259
126 32515
127 32771
128 33027
129 33283
130 33539
131 33795
132 34051
133 34307
134 34563
135 34819
136 35075
137 35331
138 35587
139 35843
140 36099
141 36355
142 36611
143 36867
144 37123
145 37379
146 37635
147 37891
148 38147
149 38403
150 38659
151 38915
152 39171
153 39427
154 39683
155 39939
156 40195
157 40451
158 40707
159 40963
160 41219
161 41475
162 41731
163 41987
164 42243
165 42499
166 42755
167 43011
168 43267
169 43523
170 43779
171 44035
172 44291
173 44547
174 44803
175 45059
176 45315
177 45571
178 45827
179 46083
180 46339
181 46595
182 46851
183 47107
184 47363
185 47619
186 47875
187 48131
188 48387
189 48643
190 48899
191 49155
192 49411
193 49667
194 49923
195 50179
196 50435
197 50691
198 50947
199 51203
200 51459
201 51715
202 51971
203 52227
204 52483
205 52739
206 52995
207 53251
208 53507
209 53763
210 54019
211 54275
212 54531
213 54787
214 55043
215 55299
216 55555
217 55811
218 56067
219 56323
220 56579
221 56835
222 57091
223 57347
224 57603
225 57859
226 58115
227 58371
228 58627
229 58883
230 59139
231 59395
232 59651
233 59907
234 60163
235 60419
236 60675
237 60931
238 61187
239 61443
240 61699
241 61955
242 62211
243 62467
244 62723
245 62979
246 63235
247 63491
248 63747
249 64003
250 64259
251 64515
252 64771
253 65027
254 65283
255 65539
256 65795
257 66051
258 66307
259 66563
260 66819
261 67075
262 67331
263 67587
264 67843
265 68099
266 68355
267 68611
268 68867
269 69123
270 69379
271 69635
272 69891
273 70147
274 70403
275 70659
276 70915
277 71171
278 71427
279 71683
280 71939
281 72195
282 72451
283 72707
284 72963
285 73219
286 73475
287 73731
288 73987
289 74243
290 74499
291 74755
292 75011
293 75267
294 75523
295 75779
296 76035
297 76291
298 76547
299 76803
300 77059
301 77315
302 77571
303 77827
304 78083
305 78339
306 78595
307 78851
308 79107
309 79363
310 79619
311 79875
312 80131
313 80387
314 80643
315 80899
316 81155
317 81411
318 81667
319 81923
320 82179
321 82435
322 82691
323 82947
324 83203
325 83459
326 83715
327 83971
328 84227
329 84483
330 84739
331 84995
332 85251
333 85507
334 85763
335 86019
336 86275
337 86531
338 86787
339 87043
340 87299
341 87555
342 87811
343 88067
344 88323
345 88579
346 88835
347 89091
348 89347
349 89603
350 89859
351 90115
352 90371
353 90627
354 90883
355 91139
356 91395
357 91651
358 91907
359 92163
360 92419
Any idea or clue as to why? If its obvious maybe point to a reference that will point out some stupid mistake I have made?
Read up on this: printf
And use %f for double not %d which is for int
You're using the wrong format specifier here:
printf("\t %d \t\t\t %d \n",i, sqrt((double) i));
Make sure to use %f for variables of type double (what a function like sqrt() returns):
printf("\t %d \t\t\t %f \n",i, sqrt((double) i));
You have used a wrong format specifier.
Try,
printf("\t %d \t\t\t %f \n" ,i , sqrt((double) i));
%f for double. Good luck.

How to properly align triangular number patterns

In C, I need to print the number pattern in the below manner in right alignment, ie: when the double digit comes the upper single digit should adjust itself to right and so on.
int main() {
long int k = 1;
int i, j, n;
scanf("%d", &n);
for (i = 1; i <= n; i++) {
for (j = 1; j <= i; j++) {
printf("%ld ", k);
k++;
}
printf("\n");
}
return 0;
}
required output:
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31 32 33 34 35 36
37 38 39 40 41 42 43 44 45
46 47 48 49 50 51 52 53 54 55 `
output I get:
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31 32 33 34 35 36
37 38 39 40 41 42 43 44 45
46 47 48 49 50 51 52 53 54 55
output required:
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31 32 33 34 35 36
37 38 39 40 41 42 43 44 45
46 47 48 49 50 51 52 53 54 55
56 57 58 59 60 61 62 63 64 65 66
67 68 69 70 71 72 73 74 75 76 77 78
79 80 81 82 83 84 85 86 87 88 89 90 91
92 93 94 95 96 97 98 99 100 101 102 103 104 105
106 107 108 109 110 111 112 113 114 115 116 117 118 119 120
121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136
137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153
154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171
172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190
191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210
output I get:
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31 32 33 34 35 36
37 38 39 40 41 42 43 44 45
46 47 48 49 50 51 52 53 54 55
56 57 58 59 60 61 62 63 64 65 66
67 68 69 70 71 72 73 74 75 76 77 78
79 80 81 82 83 84 85 86 87 88 89 90 91
92 93 94 95 96 97 98 99 100 101 102 103 104 105
106 107 108 109 110 111 112 113 114 115 116 117 118 119 120
121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136
137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153
154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171
172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190
191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210
You should calculate the length of the last outputted number and use the value as the field width in a printf call..
Here you are.
#include <stdio.h>
int main(void)
{
while ( 1 )
{
printf( "Enter a non-negative number (0 - exit): " );
unsigned int n;
if ( scanf( "%u", &n ) != 1 || n == 0 ) break;
unsigned int upper = n * ( n + 1 ) / 2;
int size = 0;
do { ++size; } while ( upper /= 10 );
putchar( '\n' );
for ( unsigned int i = 0, value = 0; i < n; i++ )
{
do
{
printf( "%*u ", size, ++value );
} while ( value != ( i + 1 ) * ( i + 2 ) / 2 );
putchar( '\n' );
}
putchar( '\n' );
}
return 0;
}
The program output is
Enter a non-negative number (0 - exit): 10
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31 32 33 34 35 36
37 38 39 40 41 42 43 44 45
46 47 48 49 50 51 52 53 54 55
Enter a non-negative number (0 - exit): 20
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31 32 33 34 35 36
37 38 39 40 41 42 43 44 45
46 47 48 49 50 51 52 53 54 55
56 57 58 59 60 61 62 63 64 65 66
67 68 69 70 71 72 73 74 75 76 77 78
79 80 81 82 83 84 85 86 87 88 89 90 91
92 93 94 95 96 97 98 99 100 101 102 103 104 105
106 107 108 109 110 111 112 113 114 115 116 117 118 119 120
121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136
137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153
154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171
172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190
191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210
Enter a non-negative number (0 - exit): 0
I will not help you write a code because zero effort is shown, but I can give hints via a pseudo code.
cin >> n; //desired number of rows
for (int i = 0; i < n; i++){
//generate triangle numbers
}//store the first n triangle numbers, given by n(n-1)/2
for (int i = 0; i < n; i++){
cout << i;
if (i==any triangle number){
cout << "\n"; //note that an endline is printed only at triangle numbers
}
}
Here is a simple solution that handles end of lines correctly too:
#include <stdio.h>
int main(void) {
int i, j, k, n, len;
if (scanf("%d", &n) == 1 && n > 0) {
/* compute the width of the last number */
//len = snprintf(NULL, 0, "%d", n * (n + 1) / 2);
//char buf[48]; /* large enough for 128-bit integers */
//len = sprintf(buf, "%d", n * (n + 1) / 2);
for (len = 1, k = n * (n + 1) / 2; k > 9; k /= 10)
len++;
for (i = k = 1; i <= n; i++) {
for (j = 1; j < i; j++) {
printf("%*d ", len, k++);
}
/* print the last number on the line without a trailing space */
printf("%*d\n", len, k++);
}
}
return 0;
}

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