Моё / prog

#include <stdio.h> 
#include <conio.h> 
#include <math.h> 

#define M_PI 3.1415926535897932384626433832

void main() 
{ 
	float c, d, l1,l2,l3;

	printf("Enter c d: ");
	scanf("%f %f\n", &c, &d);
	

	l1 = (ctg(c))* (d- M_PI/2.0)/ (c- M_PI/2.0); 
	l2 = (d - M_PI/4.0)*(gtg(c)-1)/(c - M_PI/4.0)+1; 
	l3 = (d- M_PI/4.0)*(ctg(c)-1)/(c - M_PI/4.0)+1- (ctg(c))* (d- M_PI/2.0)/ (c- M_PI/2.0); 
	
    printf("Results: %f %f %f\n", l1,l2,l3);
	getch(); 
}