how to wrte a program for Subtraction of any two number in C-program ?

#include

#include

main()

{

int a,b,c;

clrscr();

printf("\n\n\t\t\t\t* SUBTRACTION *");

printf("\n\n\n\tEnter any number :\t");

scanf("%d",&a);

printf("\n\tEnter any number :\t");

scanf("%d",&b);

c=a-b;

printf("\n\t Subtraction\t :\t%d",c);

getch();

}