#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
#include <math.h>
int main(){
	float grad;
	int num,bucle = 0;
	while (bucle = 0){
		printf("Escribe un angulo (0 a 360)");
		scanf("%f",&grad);
		if (grad > 360 or grad < 0){
			printf("Valor incorrecto!");
		}else{
			grad = grad*3.14159/180;//Passar-ho a radiants
			printf("En radiantes es: %f\n", grad);
			printf("[0] para salir\n[1] para calcular sinus\n[2] para calcular cosinus\n[3] para calcular tangente\n");
			scanf("%i", &num);
			switch(num){
			case 0:
				bucle = bucle++;
				printf("BYE!\n");
				break;
			case 1:
				printf("El sinus de %f es: %f\n",grad, sin(grad));
				break;
			case 2:
				printf("El coseno de %f es: %f\n",grad,cos(grad));
				break;
			case 3:
				printf("La tangente de %f es: %f\n",grad, tan(grad));
				break;
			default:
				printf("No has introducido ningun numero de los esperados!\n");
		}
	}
	system("pause");
	}
}

while (bucle = 0)