#include "stdafx.h"
#include "gonfce.h"
#include 

int _tmain(int argc, _TCHAR* argv[])
{
	float x,y;
    char z;

	printf("Zadejte hodnotu: ");
	scanf_s("%f",&x,1);
    printf("-----------------------------------\n");
    printf("1 sinus\n");
    printf("2 cosinus\n");
    printf("3 tangens\n");
    printf("4 cotangens\n");
    printf("5 arcussinus\n");
    printf("6 arcuscosinus\n");
    printf("7 arcustangens\n");
    printf("8 arcuscotangens\n");
    printf("-----------------------------------\n");
    printf("Zadejte funkci: ");
	scanf_s("\n%c",&z,1);
	
    switch (z)
	{
	case '1':
           y=sin(x);
           printf("sin(%.3f)=%.3f\n",x,y);
           break;
    case '2':
           y=cos(x);
           printf("cos(%.3f)=%.3f\n",x,y);
           break;
    case '3':
           y=tan(x);
           printf("tg(%.3f)=%.3f\n",x,y);
           break;
    case '4':
           y=cotg(x);
           printf("cotg(%.3f)=%.3f\n",x,y);
           break;
    case '5':
           y=asin(x);
           printf("arcsin(%.3f)=%.3f\n",x,y);
           break;
    case '6':
           y=acos(x);
           printf("arccos(%.3f)=%.3f\n",x,y);
           break;
    case '7':
           y=atan(x);
           printf("arctg(%.3f)=%.3f\n",x,y);
           break;
    case '8':
           y=arccotg(x);
           printf("arccotg(%.3f)=%.3f\n",x,y);
           break;
	default:
		   printf("Neznama funkce\n");
	}

	system("pause");

	return 0;
}

#include "stdafx.h"
#include 
#include "math.h"

float cotg(float x);
float arccotg(float x);

#include "stdafx.h"
#include 
#include "math.h"

float cotg(float x)
{
   float c=cos(x)/sin(x);
   return c;
}

float arccotg(float x)
{
   const float pi=3.1415926;
   float c=pi/2-atan(x);
   return c;
}