Change one letter from a string

Code:

#include <stdio.h>

int main() {
   char* string="monkey";
   char* ptr=string;
   *ptr='d';
   puts(string); // Seg fault error
}

How to fix this?

By not doing this:

Code:

*ptr='d';

Basically, you are not allowed to change a string literal. Any attempt to do so results in undefined behaviour.

Redefine string

Code:

char string[]="monkey";

Are you trying to make a donkey out of me?

Code:

#include <stdio.h>
#include <string.h>

int main() {
   char string[]={"monkey"};
   char* ptr=NULL;
   ptr= strchr(string, 'm');
   if(ptr)
       *ptr='d';

   puts(string); 

   return 0;
}

Originally Posted by gunitinug

Code:

#include <stdio.h>

int main() {
   char* string="monkey";
   char* ptr=string;
   *ptr='d';
   puts(string); // Seg fault error
}

How to fix this?

when you intialize a string constant to char pointer, the stringconstant is stored in a text or code (Which is read-only file).

Code:

 char *string="monkey";

So, redefine to a char array

Code:

char string[]="monkey";

Understand the difference between string and string constant.