ANSI C programming [closed] - c

Question

Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers.
This question was caused by a typo or a problem that can no longer be reproduced. While similar questions may be on-topic here, this one was resolved in a way less likely to help future readers.
Closed 8 years ago.
Improve this question
On page 69 from ANSI C programming by K&R there is an example of a function that works as a special version of Unix program grep.
The code is:
#include <stdio.h>
#define MAXLINE 1000 //max input length
int getlinee(char line[], int max);
int Strindex(char source[], char searchfor[]);
char pattern[] = "ould";
int main ()
{
char line[MAXLINE];
int found =0;
while (getlinee(line,MAXLINE) > 0)
if (Strindex(line, pattern)>=0){
printf("%s", line);
found ++;
}
return found;
} // end of main function
int getlinee (char s[], int lim)
{
int c,i;
i =0;
while (--lim > 0 && (c=getchar()) != EOF && c!= '\n')
s[i++] =c;
if (c =='\n')
s[i++] =c;
s[i] = '\0' ;
return i;
}
int Strindex (char s[], char t[])
{
int i,j,k;
for (i =0; s[i] != '\0'; i++)
for (i =i, k=0; t[k] != '\0' && s[j] == t[k]; j++, k++);
if (k > 0 && t[k] == '\0')
return i;
}
return -1;
} // end of strindex
when I compile it I get
51:1:error: expected identifier or '(' before 'return'
54:1:error: expected identifier or '(' before '}' token
I checked the code number of times and couldn't spot out the error.

Answer 1

Remove your extra
return -1;
} // end of strindex
Also you #include is empty.You are not using any header file.

Answer 2

You have two problems in your code.
(i). Line number 40:
for (i = i, k = 0; t[k] != '\0' && s[j] == t[k]; j++, k++)
Compiler may raise an error for i = i as Assignment to itself 'i = i'
(ii). Line number 45:
An extra }. Delete this. Then try to build. I make changes your code and it successfully built.
#include <stdio.h>
#define MAXLINE 1000 //max input length
int getlinee(char line[], int max);
int Strindex(char source[], char searchfor[]);
char pattern[] = "ould";
int main()
{
char line[MAXLINE];
int found = 0;
while (getlinee(line, MAXLINE) > 0)
if (Strindex(line, pattern) >= 0) {
printf("%s", line);
found++;
}
return found;
} // end of main function
int getlinee(char s[], int lim) {
int c, i;
i = 0;
while (--lim > 0 && (c = getchar()) != EOF && c != '\n')
s[i++] = c;
if (c == '\n')
s[i++] = c;
s[i] = '\0';
return i;
}
int Strindex(char s[], char t[]) {
int i, j, k;
for (i = 0; s[i] != '\0'; i++)
for (i = 1, k = 0; t[k] != '\0' && s[j] == t[k]; j++, k++)
;
if (k > 0 && t[k] == '\0')
return i;
return -1;
} // end of strindex

Answer 3

}
return -1;
Remove } brace above line with return operator.

Answer 4

If we judge by indent and code structure, I think there's open parentheses missing in line:
for (i =0; s[i] != '\0'; i++)
in last function. So the actual line should look like:
for (i =0; s[i] != '\0'; i++) {
There are more than one error in last function. Another one is that j is not initialized.
As I can conclude, that function should search for index of substring inside string. First loop passes through string s. Second loop passes through second string and compares two strings. If comparison reaches the end of second string, it returns found index, else function exits with index -1.