Answer:
This could take some time to make, but just to get you going I made the first 3 lines. I don't know how to justify the prices to the right, so you probably have to research that.
Explanation:
#include <stdio.h>
int main()
{
const double KEYBOARD_PRICE = 35.50;
const double MOUSE_PRICE = 12.90;
const double MONITOR_PRICE = 600.00;
const double PRINTER_PRICE = 168.00;
const double SPEAKER_PRICE = 120.00;
const double tax = 0.0825;
int keyboardQty, mouseQty, monitorQty, printerQty, speakerQty;
printf("Enter the number of items sold: ");
printf("Keyboard > ");
scanf("%d", &keyboardQty);
printf("Mouse > ");
scanf("%d", &mouseQty);
printf("Monitor > ");
scanf("%d", &monitorQty);
printf("Printer > ");
scanf("%d", &printerQty);
printf("Speaker > ");
scanf("%d", &speakerQty);
double keyboardTotal = KEYBOARD_PRICE * keyboardQty;
double mouseTotal = MOUSE_PRICE * mouseQty;
double monitorTotal = MOUSE_PRICE * monitorQty;
double printerTotal = PRINTER_PRICE * printerQty;
double speakerTotal = SPEAKER_PRICE * speakerQty;
//double subtotal = ...
printf("%-3s\t%-11s\t%-10s\t%-11s\n", "QTY", "DESCRIPTION", "UNIT PRICE", "TOTAL PRICE");
printf("%-3s\t%-11s\t%-10s\t%-11s\n", "---", "-----------", "----------", "-----------");
printf("%d", keyboardQty);
printf("%-3d\t%-11s\t%-10.2f\t%-11.2f\n", keyboardQty, "KEYBOARD", KEYBOARD_PRICE, keyboardTotal);
}
