#include <stdio.h>
#include <conio.h>
main()
{
	printf("\n----------Program : calculating the area of a rectangular volume----------\n");
	float a,b,c,d;
	printf("Input a :");
	scanf("%f",&a);
	printf("Input b :");
	scanf("%f",&b);
	printf("Input c :");
	scanf("%f",&c);
	d = a*b*c;
	printf("Out put : %.1f",d);
	printf("\n----------By : Arisa Sansiri No.30----------");
}