#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){
		printf("What to do?: ");
		scanf("%c", operator);

			switch(operator)
				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 /:
					printf("Number 1: ");
					  scanf("%f", &n1);
					printf("Number 2: ");
					  scanf("%f", &n2);
					result = n1 / n2;
						printf("Result = %f \n", &result);
					break;
				default: printf("Please use a correct calculation term \n");
		}
}