Using if else construct in C

#include <stdio.h>

#include <conio.h>

void main

{

                clrscr();

                int a;

                printf("Please enter a number: \n");

                scanf("%d",&a);

                if

                                (a<20)

                {

                                printf("%d is less than 20\n", a);

                }

                else

                {

                                printf("%d is greater than 20\n", a);

                }

                getch();

}

Output:  

Please enter a number: 22

22 is greater than 20.