Segmentation Fault (core dumped) in simple c program !

Hello there,

I am getting the error:

Code:

---

Segmentation fault (core dumped)

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error in a simple c program. The code is:

Code:

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

char*
encrypt(char *s)
{
  int i, l = strlen(s);
  for(i = 0; i < l; i++)
      s[i] -= 15;
 
  return s;
}


int main(int argc, char *argv[])
{
    char* test = "This is simple encryption.";
   
    printf("%s", encrypt(test));
  return 0;
}

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Please help.

Try it with
char test[] = "This is simple encryption.";

Then understand that in your case, your pointer was pointing to constant read-only memory, and that trying to modify it results in instant death for your program.