#include <stdio.h>
#include <stdlib.h>


//This program should 
//     1) ask the user first for the number of orders: numorders (between 1-3)
//     2) check that numorders is within the desired range
//     3) prompt the user for the cost of each order and output the total at the end
int main()
{
    int numorders;
    float cost1=0, cost2=0, cost3=0;
    float total;
    
    printf("Enter the number of orders:");
    scanf("%d", &numorders);
    
    //check for an incorrect number of orders
    if(numorders < 0 || numorders > 3)
    {
        printf("Invalid number of orders!\n");
    }
    else
    {
        //correct number of orders, get the cost of each order
        //note the hierarchical if statements
        if(numorders > 0)
        {
            //this is executed when numorders is 1, 2, or 3
            printf("Enter the cost of the 1st order: ");
            scanf("%f", &cost1);
            
            if(numorders > 1)
            {
                 //this is executed when numorders is 2, or 3
                 printf("Enter the cost of the 2nd order: ");
                 scanf("%f", &cost2);
                 
                 if(numorders > 2)
                 {
                     //this is executed when numorders is 3
                     printf("Enter the cost of the 3rd order: ");
                     scanf("%f", &cost3);
                 }
            }
        }

        //sum the costs
        total = cost1+cost2+cost3;
        printf("The total for the order is: %.2f\n", total);
    }
    
    

    system("pause");
}