C program to concat 2 strings using pointer.

#include<stdio.h>
#include<conio.h>
void copystr(char *, char *);
int main()
{
    char str1[50], str2[50];
    printf("Enter the string: ");
    gets(str1);
    printf("\nString 1 = %s", str1);
    copystr(str2, str1);
    printf("\nString 2 = %s", str2);
    getch();
    return 0;
}
void copystr(char *s2, char *s1)
{
    while(*s1)
    {
        *s2 = *s1;
        s1++;
        s2++;
    }
    *s2 = '\0';
}