#include <stdio.h>


char *strcpy( char s1[], char s2[] )
{
    char *retVal = s1;  // Save s1 to return

    /* ----------------------------------
       '\0' marks the end of the string !
       ---------------------------------- */
    while ( *s2   != '\0' )   // Not end of s2
    {
        *s1++ = *s2++;   // Copy current character     
                         // Move to next character
    }

    *s1   = '\0';   // Mark the end of the s1 string    

    return(retVal);
}

int main(int argc, char *arg[])
{
   char a[] = "Hello";

   char b[10];

   strcpy(b, a);

   printf("b = %s\n", b);

}