#include <stdio.h>
#include <stdlib.h>

void main(){
 int w,h,a,A;
int Traingle(int*w,int*h);
int Square(int*w,int*h);
printf("H:");
 scanf("%d",h);
 printf("W:");
 scanf("%d",w);
 printf("1.Traingle\n2.Square");
 scanf("%d,a")
if(a==1){
A=Traingle(&w,&h);
printf("Area=%d",A);
}
else if(a==2){
A=Square(&w,&h);
printf("Area=%d",A);
}
else{printf("goodbye")}
int Traingle(int*w,int*h)
{
    int A
    A=(0.5)*w*h
    return A;
}
int Square(int*w,*h)
{
    int A
    A=(*w)*(*h);
    return A;
}
}