Concatenate using macro

Write a program to concatenate two values using macro.

#include<stdio.h>
#define MAC(i,j) i##j
int main()
{
	char AB[] = "India";
	printf("%d\n",MAC(72,83));
	printf("%f\n",MAC(3.6,68));
	printf("%s\n",MAC(A,B));
	return 0;
}

Output

7283
3.668000
India