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

void main()
{
	int touche;

	do
	{
		float nb1, nb2, result;
		char operateur;
		int fError;

		// init
		fError = 0;

		// Saisie
		clrscr();
		fflush(stdin);
		printf( "\t\tCalculette\n\n" );
		printf( "\nPremier operande: " );
		scanf( "%f", &nb1 );
		printf( "\n\nOperateur: " );
		fflush(stdin);
		scanf( "%1c", &operateur );
		printf( "\n\nDeuxieme operande: " );
		scanf( "%f", &nb2 );

		// Verif des parametres
		switch(operateur)
		{
			case '+':
			{
				result = nb1 + nb2;
				break;
			}
			case '-':
			{
				result = nb1 - nb2;
				break;
			}
			case 'x':
			case 'X':
			case '*':
			{
				result = nb1 * nb2;
				break;
			}
			case '/':
			case ':':
			{
				if( nb2 == 0 )
				{
					printf( "\n\nDivision par zero." );
					fError = 1;
				}
				else
				{
					result = nb1 / nb2;
				}
				break;
			}
			default:
			{
				printf( "\n\nOperateur inconnu '%c'." );
				fError = 1;
			}
		}

		if( ! fError )
		{
			printf( "\n\nResultat: %f", result );
		}

		printf( "\n\n\tAutre calcul? ");


		touche = getch();
	} while( touche != 'n' && touche != 'N' );
}