main.c

//Supun Suriyaarachchi
// IT20187514

#include <stdio.h> //Include a header file
int main()         //Function main begins program execution
{
    char sCode, ch = 'Y';                              //Initializing and declaring variables
    int sCharge = 0, count = 0, numB = 0, Total = 0;   //Initializing and declaring variables
    int gCode, amount = 0, totAmount = 0, totBill = 0; //Initializing and declaring variables

    while ((count < 5) && (ch == 'Y' || ch == 'y')) //loop 5 times and also if (ch = 'Y'/'y')
    {
        printf(" \n-----------------------------------");
        printf(" \nEnter subject code:"); //prompt
        scanf(" %c", &sCode);             //read subject code from the user

        if (sCode == 'M' || sCode == 'm')
        {
            printf("You have chosen Mathematics\n"); //Display message
            printf(" \nEnter grade:");               //prompt
            scanf(" %d", &gCode);                    //read grade from the user

            if (gCode == 9)
            {
                printf(" \nEnter number of past paper bundles needed:");
                scanf(" %d", &numB);
                amount = numB * 3000.0;
            }
            else if (gCode == 10)
            {
                printf(" \nEnter number of past paper bundles needed:");
                scanf(" %d", &numB);
                amount = numB * 3500.0;
            }
            else if (gCode == 11)
            {
                printf(" \nEnter number of past paper bundles needed:");
                scanf(" %d", &numB);
                amount = numB * 3500.0;
            }
            else
            {
                printf("\nInvalid grade\n");
                printf("Please try again\n");
                count--;
                amount = 0;
            } //End if
        }     //End if

        else if (sCode == 'S' || sCode == 's')
        {
            printf("You have chosen Science\n");
            printf(" \nEnter grade:");
            scanf(" %d", &gCode);

            if (gCode == 9)
            {
                printf(" \nEnter number of past paper bundles needed:");
                scanf(" %d", &numB);
                amount = numB * 3000.0;
            }
            else if (gCode == 10)
            {
                printf(" \nEnter number of past paper bundles needed:");
                scanf(" %d", &numB);
                amount = numB * 3500.0;
            }
            else if (gCode == 11)
            {
                printf(" \nEnter number of past paper bundles needed:");
                scanf(" %d", &numB);
                amount = numB * 3500.0;
            }
            else
            {
                printf("\nInvalid grade\n");
                printf("Please try again\n");
                count--;
                amount = 0;
            }
        }
        else if (sCode == 'E' || sCode == 'e')
        {
            printf("You have chosen English\n");
            printf(" \nEnter grade:");
            scanf(" %d", &gCode);

            if (gCode == 9)
            {
                printf(" \nEnter number of past paper bundles needed:");
                scanf(" %d", &numB);
                amount = numB * 3000.0;
            }
            else if (gCode == 10)
            {
                printf(" \nEnter number of past paper bundles needed:");
                scanf(" %d", &numB);
                amount = numB * 3500.0;
            }
            else if (gCode == 11)
            {
                printf(" \nEnter number of past paper bundles needed:");
                scanf(" %d", &numB);
                amount = numB * 3500.0;
            }
            else
            {
                printf("\nInvalid grade\n");
                printf("Please try again\n");
                count--;
                amount = 0;
            }
        }

        else if (sCode == 'H' || sCode == 'h')
        {
            printf("You have chosen History\n");
            printf(" \nEnter grade:");
            scanf(" %d", &gCode);

            if (gCode == 9)
            {
                printf(" \nEnter number of past paper bundles needed:");
                scanf(" %d", &numB);
                amount = numB * 2500.0;
            }
            else if (gCode == 10)
            {
                printf(" \nEnter number of past paper bundles needed:");
                scanf(" %d", &numB);
                amount = numB * 3000.0;
            }
            else if (gCode == 11)
            {
                printf(" \nEnter number of past paper bundles needed:");
                scanf(" %d", &numB);
                amount = numB * 3000.0;
            }
            else
            {
                printf("\nInvalid grade\n");
                printf("Please try again\n");
                count--;
                amount = 0;
            }
        }

        else if (sCode == 'G' || sCode == 'g')
        {
            printf("You have chosen Geography\n");
            printf(" \nEnter grade:");
            scanf(" %d", &gCode);

            if (gCode == 9)
            {
                printf(" \nEnter number of past paper bundles needed:");
                scanf(" %d", &numB);
                amount = numB * 2000.0;
            }
            else if (gCode == 10)
            {
                printf(" \nEnter number of past paper bundles needed:");
                scanf(" %d", &numB);
                amount = numB * 2500.0;
            }
            else if (gCode == 11)
            {
                printf(" \nEnter number of past paper bundles needed:");
                scanf(" %d", &numB);
                amount = numB * 2500.0;
            }
            else
            {
                printf("\nInvalid grade\n");
                printf("Please try again\n");
                count--;
                amount = 0;
            }
        }
        else if (sCode == 'L' || sCode == 'l')
        {
            printf("You have chosen English literature\n");
            printf(" \nEnter grade:");
            scanf(" %d", &gCode);

            if (gCode == 10)
            {
                printf(" \nEnter number of past paper bundles needed:");
                scanf(" %d", &numB);
                amount = numB * 3000.0;
            }
            else if (gCode == 11)
            {
                printf(" \nEnter number of past paper bundles needed:");
                scanf(" %d", &numB);
                amount = numB * 3000.0;
            }
            else
            {
                printf("\nInvalid grade\n");
                printf("Please try again\n");
                count--;
                amount = 0;
            }
        }
        else if (sCode == 'B' || sCode == 'b')
        {
            printf("You have chosen Business studies\n");
            printf(" \nEnter grade:");
            scanf(" %d", &gCode);

            if (gCode == 10)
            {
                printf(" \nEnter number of past paper bundles needed:");
                scanf(" %d", &numB);
                amount = numB * 3000.0;
            }
            else if (gCode == 11)
            {
                printf(" \nEnter number of past paper bundles needed:");
                scanf(" %d", &numB);
                amount = numB * 3000.0;
            }
            else
            {
                printf("\nInvalid grade\n");
                printf("Please try again\n");
                count--;
                amount = 0;
            }
        }

        else if (sCode == 'I' || sCode == 'i')
        {
            printf("You have chosen Information and Communication technology\n");
            printf(" \nEnter grade:");
            scanf(" %d", &gCode);

            if (gCode == 10)
            {
                printf(" \nEnter number of past paper bundles needed:");
                scanf(" %d", &numB);
                amount = numB * 3000.0;
            }
            else if (gCode == 11)
            {
                printf(" \nEnter number of past paper bundles needed:");
                scanf(" %d", &numB);
                amount = numB * 3000.0;
            }
            else
            {
                printf("\nInvalid grade\n");
                printf("Please try again\n");
                count--;
                amount = 0;
            }
        } //End else if

        else
        {
            printf("\nInvalid subject code\n");
            printf("Please try again\n");
            count--;
            amount = 0;
        } //End else

        count++;

        if (count == 5)
        {
            printf("\nYou have entered the maximum number of orders\n");
            totAmount = totAmount + amount;
            break;
        } //End if
        else
        {
            printf("\nDo you want more past paper bundles (Y/N)?\n");
            scanf("%*c%c", &ch);
        } //End else

        totAmount = totAmount + amount; //Calculate totAmount

    } //End while
    printf("\n-----------------------------------\n");

    totBill = totBill + totAmount; //Calculate totBill
    sCharge = totBill * 10 / 100;  //Calculate sCharge (service charge)
    Total = totBill + sCharge;     //Calculate Total

    printf(" Order has been placed successfully\n");
    printf(" Your delivery is on the way\n");
    printf(" Thank you for choosing 'Wisdom'\n");
    printf("\n");                                   //line spacing
    printf(" Sub total = Rs.%.2d\n", totBill);      //Displaying the sub total
    printf(" Service charge = Rs.%.2d\n", sCharge); //Displaying service charge
    printf("\n");
    printf(" Total Amount= Rs.%.2d\n", Total); //Displaying the total amount

    return 0;
} //End of main function