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Here is the code for copying string in C.
#include <stdio.h>
int main()
{
char s1[100], s2[100];
int i;
printf("Enter string s1:");
fgets(s1,sizeof(s1),stdin);
for(i=1;s1[i]!='\0';i++)
{
s2[i]=s1[i];
}
s2[i]='\0';
printf("%s",s2);
}
However, when I enter "How are you?", the copied string become "#ow are you?"
Since arrays start at 0, your for loop should look like this
for(i=0;s1[i]!='\0';i++) {
// ^ 0, not 1
The for-loop must start at the index 0. So change your for loop to this:
for(i=0;s1[i]!='\0';i++)
{
s2[i]=s1[i];
}
Related
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I have a problem that this code doesn't end with output.
I appreciate if help me.
#include <stdio.h>
int main(){
int number,counter=0;
scanf("%d",&number);
while (number!=0){
number=number/10;
counter++;
}
printf("the number has %d digits",&counter);
return 0;
}
You should remove "&" from your printf statement.
& is for scanning not printing
the correct form is :
printf("the number has %d digits",counter);
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The prototype (void example();) I have mentioned for the program is correct, but the compiler is giving garbage value instead of correct values in the output.
What codes should be added or removed?
Here is my code:
#include <stdio.h>
#include<conio.h>
#include <stdlib.h>
void example()
{
static int x = 10;
x=x+10;
printf("\n%d",&x);
}
int main()
{
int i;
for(i=0;i<=3;i++)
{
example();
}
getch();
return 0;
}
You are using an adress of a variable where printf wants just the value:
printf("\n%d",&x);
->
printf("\n%d",x);
Your result might also be improved by using "%d\n" instead.
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Closed 6 years ago.
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#include <stdio.h>
int main (void)
{
int hist,geo,phy,chem,bio;
int credits=0;
printf("Enter marks in history : ");
scanf("%d",&hist);
if(hist>40)
credits =10;
else
printf("No credits awarded for history");
printf("Credits obtained is %d",&credits);
return(0);
}
when I run the code, and I get a value of 230586 for the variable 'Credits'. Please help. I am a beginner in C
&x is like asking a question "What is the address of variable x?" , that's why you get the strange number. In order to print the variable value, please pass credits instead of &credits to the printf function.
printf("Credits obtained is %d", credits);
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//I wanted to separate last digit i.e."2" as an int from "hello.mp4;2" Here is the code:
int main()
{
char str[30];
int separate = 0;
strcpy( str, "hello.mp4;2" );
sscanf(str, "%*[^;]%d", &separate);
printf("%d\n",separate);
return 0;
}
and it is not woriking...
Change the sscanf to:
sscanf(str, "%*[^;];%d", &separate);
I.e., you need to match the semicolon ; after the string that excludes it. The portion in the square brackets matches the string that precedes the semicolon, leaving ;2. So you then need to match the semicolon ; before trying to match the 2.
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How many times the while loop is executed in the below prog if short int is of 2 bytes?
main()
{
int j = 1;
while(j <= 255);
{
printf("%d",j);
j++;
}
return 0;
}
i think it should be 255 times but its not correct. Can anyone tell me why?
You have a semicolon at the end of your while-line. The while loop, consisting of the statement ;, executes "infinitely" many times.