#include<stdio.h>
#include<string.h>
int main()
{
     char s1[]="string";
     char s2[]="Copy";

     strcat(s2,s1);
     puts(s2);


}




another

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

int main ()
{
   char s[100];
   int length;

   strcpy(s, "My name is Niaz");

   length = strlen(s);
   printf("Length of %s is %d\n", s, length);

   return(0);
}