#include <stdio.h>

char* ptr(char *string_a, char *string_b)
{
    int i = 0, j = 0;
    while(string_a[i]!='\0') { ++i; };
    while(string_b[j]!='\0') 
    {
        string_a[i]=string_b[j];
        j++; i++;
    }
    string_a[i]='\0';
    return string_a;
}
int main (void)
{
    char string_a[250];
    char string_b[250];
    puts(" -- DIGITE UMA PALAVRA -- ");
    gets(string_a);
    puts(" -- DIGITE UMA PALAVRA -- ");
    gets(string_b);
    puts(ptr(string_a,string_b));
    return 0;
}