PROGRAM FOR BINOMIAL COEFFICIENT NCR OF TWO NUMBERS

/*...............PROGRAM FOR BINOMIAL COEFFICIENT NCR OF TWO NUMBERS..........*/
void main()
{
    int n,r,ncr;
    clrscr();
    printf("Enter values of n and r");
    scanf("%d%d",&n,&r);
    ncr=recbicoff(n,r);
    printf("Binomial coefficient of c(%d,%d) is %d",n,r,ncr);
    getch();
}
int recbicoff(int x,int y)
{
    if(y>x)
    {
        printf("The value of n can't be less than r");
        getch();
        exit(1);
    }
    if(y==0||y==x)
    {
        return(1);
    }
    else
    {
        return(recbicoff(x-1,y-1)+recbicoff(x-1,y));
    }
}