#include <stdio.h>

main() {

 	float n1, n2, result;
	char operator;
	
	printf("Hello, welcome to c03 calculator v.1 \n");
	printf("Syntax: Number 1 [calculation] Number 2 \n");
	printf("Use the marks + - * / to choose your calculation. Use q to quit \n \n");

	while(operator != 'q')
		{
/* DEBUG LINE */	printf("DEBUG 1: (%c) \n", operator); /* DEBUG LINE */	
		printf("What to do?: ");
		scanf("%c", &operator);
		scanf("%*[^\n]"); /* Get rid of the unneeded keystrokes, we only want 1 char*/
/* DEBUG LINE */	printf("DEBUG 2: (%c) \n", operator); /* DEBUG LINE */	
			switch(operator)
				{
				case '+':
					{
					printf("Number 1: ");
					  scanf("%f", &n1);
					printf("Number 2: ");
					  scanf("%f", &n2);
					result = n1 + n2;
						printf("Result = %f \n", result);
/* DEBUG LINE */	printf("DEBUG 3: (%c) \n", operator); /* DEBUG LINE */	
					break;
					}
				case '-':
					{
					printf("Number 1: ");
					  scanf("%f", &n1);
					printf("Number 2: ");
					  scanf("%f", &n2);
					result = n1 - n2;
						printf("Result = %f \n", result);
					break;
					}
				case '*':
					{
					printf("Number 1: ");
					  scanf("%f", &n1);
					printf("Number 2: ");
					  scanf("%f", &n2);
					result = n1 * n2;
						printf("Result = %f \n", result);
					break;
					}
				case '/':
					{
					printf("Number 1: ");
					  scanf("%f", &n1);
					printf("Number 2: ");
					  scanf("%f", &n2);
					result = n1 / n2;
						printf("Result = %f \n", result);
					break;
					}
				case 'q':
					{
					printf("Exiting... \n");
					break;
					}
				default:
					{
					printf("Please use a correct calculation term \n");
					}
				}
				n1 = 0;
				n2 = 0;
				result = 0;
				
	/* DEBUG LINE */	printf("DEBUG 4: (%c) \n", operator); /* DEBUG LINE */	
				
		}
}