Program in C to concatenate two strings

#include<stdio.h>

#include<conio.h>

#include<string.h>

void main()

{

            char c[100];

            char a[50];

            char b[50];

            clrscr();

            printf("Enter a string1:");

            gets(a);

            printf("Enter a string2:");

            gets(b);

            strcat( a,b);

            printf("%s",a);

            getch();

}