triangle / triangle / main

#include <stdio.h>
#include <time.h>
#define _USE_MATH_DEFINES
#include <math.h>

int main()
{
	float x1 = 0, y1 = 0, x2, y2 = 0, x3=0, y3 ; //coordinates rectangle
    int p, q; // lenght of katets rectangle
    float S;

	FILE * f;


	f=fopen("triangle.in","r");

	fscanf(f,"%i %i ",&p, &q);

	fclose(f);


	f=fopen("triangle.out", "w");

    //if (p < q)
//    {
//        h = p; a = q;
//    }
//   else
//   {
//       h = q; a = p;
//   }

    // the maximum square of a triangle in the rectangle is equal to half square of ​​a rectangle

    S = 0.5 * p * q;

    x2 = p;
    //x3 = p;
    y3 = q;

	fprintf(f, "%0.1f\n", S);
	fprintf(f, "%0.6f %0.6f\n", x1, y1);
	fprintf(f, "%0.6f %0.6f\n", x2, y2);
	fprintf(f, "%0.6f %0.6f\n", x3, y3);

	fclose(f);
}