c program dumping core on unix
#include<stdio.h>
#include<stdlib.h>

void main()
{
char *name;
name="James Bond";
int i=0;
sprintf(name,"%s/%d",name,i);
printf("String is %s",name);
}

#include <stdio.h>

int main (void) {
    char *name;
    char name2[100];  // make sure plenty of space.
    name = "James Bond";
    int i = 0;
    sprintf (name2, "%s/%d", name, i);
    printf ("String is %sn", name2);
    return 0;
}

name = "Bob";
*name = 'J';   // to try and make "Job"

char *path = "/tmp/";
char *file = "xyz.txt"
char fullpath = malloc (strlen (path) + strlen (file) + 1);
if (fullpath == NULL)
    // error and exit condition
strcpy (fullpath, path);
strcat (fullpath, file);
// use fullpath for your nefarious purposes :-)
free (fullpath);

char name[]="James Bond";

#include<stdio.h>
#include<stdlib.h>
void main()
{
    char name[] = "James Bond";
    int i = 0;

        printf("String is %s/%d", name,i);

}

char *name;
name="James Bond";   // name is pointing into read-only memory
int i=0;
sprintf(name,"%s/%d",name,i); // trying to write to read-only memory
printf("String is %s",name);

char name[32] = "James Bond";
...

char* str = NULL; // pointer should be initialized to NULL
asprintf (&str, "someformat %d", 20);