/*This is a calculator program. It may be  edited, but the original author must be mentioned.  *
*it was written on 2005-06-23 by Jesse H-K */

#include <stdio.h>

#define FALSE 0
#define TRUE !FALSE

int main()
{
	
	float num1, num2, total;
	char oper;
	int trigger, choice, done;
	
	done = FALSE;
	while(!done) 
	{
                 printf("\n\n\n\t\t~~ C  A  L  C  U  L  A  T  O  R ~~");
		printf("\n\nThis will calculate the answer to a SIMPLE math question (eg: 2 * 3)");
		printf("\nOperators are as follows:");
		putchar('\n');
		putchar('\n');
		puts(" / = divide "); 
		puts(" * = multiply ");
		puts(" + = add");
		puts(" - = subtract");
		putchar('\n');
		printf("Enter the first number: "); 
		scanf("%f", &num1);
		fflush(stdin);
		printf("Enter the operator: "); /* enter +, -, etc */
		oper = getchar();
		fflush(stdin);
		printf("Enter the second number: ");
		scanf("%f", &num2);
		if(oper == '+')
		{
			total = num1+num2;
			printf("\n\n%.2f + %.2f = %.2f",num1, num2, total);
		}	
		else if(oper == '-')
		{
			total = num1-num2;
			printf("\n\n%.2f - %.2f = %.2f", num1, num2, total);
			putchar('\n');
		}
		else if(oper == '*')
		{
			total = num1 * num2;
			printf("\n\n%.2f * %.2f = %.2f", num1, num2, total);
			putchar('\n');
		}
		else if(oper == '/')
		{
			total = num1 / num2;
			printf("\n\n%.2f / %.2f = %.2f", num1, num2, total);
			putchar('\n');
		}	
		else
		{
			printf("Follow the directions directions next time");
		}
		putchar('\n');
		putchar('\n');
		printf("Repeat?\n\n");
		puts("no = 1");
		puts("yes = 2");
		fflush(stdin);
		printf("\tEnter choice: ");
		scanf("%d", &choice);
		switch(choice)
		{
			case 1:
				done = TRUE; 
				break;
			case 2:
				break;
		}
	}
	fflush(stdin);
	return(0); 
} /* end of program */

		bool valid = true;
		switch (oper)
		{
			case '+':
				total = num1 + num2;
				break;
			case '-':
				total = num1 - num2;
				break;
			case '*':
				total = num1 * num2;
				break;
			case '/':
				total = num1 / num2;
				break;
			default:
				printf("Follow the directions next time!\n");
				valid = false;
				break;
		}
		
		if (valid)
		{
			printf("\n\n%.2f %c %.2f = %.2f\n", num1, oper, num2, total);
		}

#define true 1
#define false 0