K&R Exercise 5.3

#include <stdio.h>

void strcat1(char *, char *);

int main()
{
    char *s = "Pointer";
    char *t = "Array";
    strcat1(s,t);
    printf("\n");
    puts(s);
    printf("\n");
    return 0;
}

void strcat1(char *s, char *t)
{
    while(*s++ != '\0')
        ;
    while(*s++ = *t++)
        ;
}