사다리꼴의 면적과 둘레를 계산하는 프로그램

#include <stdio.h>
int main() {
   int a = 2 , b = 3 , c = 5 , d = 4, h = 5;
   float area, perimeter;
   printf("The sides of trapezium are %d , %d , %d , %d </p><p>", a,b,c,d);
   printf("Distance between two parallel sides is %d </p><p>", h);
   perimeter = a+b+c+d;
   area = 0.5 * (a + b) * h ;
   printf("Perimeter of the trapezium is %.1f</p><p>", perimeter);
   printf("Area of the trapezium is: %.3f", area);
   return 0;
}

The sides of trapezium are 2 , 3 , 5 , 4
Distance between two parallel sides is 5
Perimeter of the trapezium is 14.0
Area of the trapezium is: 12.500