#include<stdio.h>
#include<conio.h>
main()
{
    float a,b,c,d;
	printf("Program:calculating the area of a square");
	printf("\nInput a:");
	scanf("%g",&a);
	printf("\nInput b:");
	scanf("%g",&b);
	printf("\nInput c:");
	scanf("%g",&c);
	d=0.5*a*b*c;
	printf("\nResult:%g",d);
	printf("\nBy:Pacharapoom Rungrojwattanasiri No.4");
}