Question

13. Write the program with at least two functions to solve the following problem (excluding the main function).

The members of a board are considering voting for a tax increase for 100 items. They are considering an increase of 5% for each item. Write a program that will prompt for and accept the current price for each item, then calculate and display their individual price after tax increases. At the end of the program, print the total price before and after the tax increase for all 100 items

this is my current code

#include <stdio.h>

float original(float price[100])
{
   int i;
   for(i=0; i<10; i++)
   {
       printf("Please enter prices.\n");
       scanf("%f",&price[i]);
       printf("The original price %f and the new price %f.", price[i], tax[i]);
   }
  
}

float newprice(float price[100])
{
   float tax[100];
   printf("Origianl price Tax increase\n");
   float totalprice = 0;
   float totaltax = 0;
   int i;
   for(i=0; i<100; i++)
   {
       tax[i]=1.08*price[i];
       totalprice += price[i]-tax[i];
       totaltax += tax[i]
       printf("%f %f %f \n", price[i], tax[i], price[i] + tax[i]);
   }

   printf("total price and total tax is = %f %f",totalprice, totaltax);
}

int main()
{
   float price[100];
   original(price, tax);
   newprice(price);
}

Answer 1

Code:

#include <stdio.h>
float original(float price[]) //function to read 100 item original prices and return total price.
{
int i;
float originalTotalPrice = 0;
for(i=0; i<100; i++) //loop for read 100 item prices.
{
printf("Please enter item %d price: ", i+1); //prompting the user to enter each item price.
scanf("%f",&price[i]); //reading price in to array.
originalTotalPrice += price[i]; //adding each item original price.
}
return originalTotalPrice; //returning total original price of 100 items.
}
float newprice(float price[]) //function to calculate after tax increase and printing and return total price of 100 items after tax increase.
{
int i;
float newPriceOfEachItem, eachItem5PerTax, newTotalPrice = 0;
for(i=0; i<100; i++) //to access 100 item prices.
{
eachItem5PerTax = (price[i]*5)/100; //calculating each item 5 percent tax.
newPriceOfEachItem = price[i] + eachItem5PerTax; //increasing tax for each item.
printf("Item %d price after increasing of tax: %f\n", i+1, newPriceOfEachItem); //printing prices after tax increase.
newTotalPrice += newPriceOfEachItem; //adding each price after tax increase.
}
return newTotalPrice; //returning total all 100 item prices after tax increase.
}
int main()
{
float price[100], originalTotalPrice, newTotalPrice; //variable declarations.
originalTotalPrice = original(price); //calling the function to read 100 item original prices.
newTotalPrice = newprice(price); //calling the function to calculate new price and printing.
printf("\nTotal price of all 100 items before tax increase: %f\n", originalTotalPrice); //printing total price before tax increase.
printf("Total price of all 100 items after tax increase: %f\n", newTotalPrice); //printing total price after tax increase.
return 0;
}

#include <stdio.h> float original (float price[]) //function to read 100 item original prices and return total price. int i; float originalTotalPrice = 0; for(i=0; i<100; i++) //loop for read 100 item prices. { printf("Please enter item 3d price: ", i+1); //prompting the user to enter each item price. scanf("%f",&price[i]); //reading price in to array. originalTotalPrice += price[i]; //adding each item original price. 9 } return originalTotalPrice; //returning total original price of 100 items. float newprice (float price[]) //function to calculate after tax increase and printing and return total price of 100 items after tax increase. { int i; float newPriceOfEachItem, eachItem5Pertax, newTotalPrice = 0; for(i=0; i<100; i++) //to access 100 item prices. { 14 15 16 17 18 19 20 21 22 23 24 25 26 eachItem PerTax = (price[i]*5)/100; // calculating each item 5 percent tax. newPriceOfEachItem = price[i] + eachItem5PerTax; //increasing tax for each item. printf("Item $d price after increasing of tax: 3f\n", i+1, newPriceOfEachItem); //printing prices after tax increase. newTotalPrice += newPriceOfEachItem; //adding each price after tax increase. return newTotalPrice; //returning total all 100 item prices after tax increase.

27 28 29 30 31 32 33 34 35 36 int main() El { float price[100], originalTotalPrice, newTotalPrice; //variable declarations. originalTotalPrice = original (price); // calling the function to read 100 item original prices. newTotalPrice = newprice (price); // calling the function to calculate new price and printing. printf("\nTotal price of all 100 items before tax increase: 3f\n", originalTotalPrice); //printing total price before tax increase. printf("Total price of all 100 items after tax increase: 3f\n", newTotalPrice); //printing total price after tax increase. return 0;

For showing the output I have taken 5 items as example:

#include <stdio.h> float original (float price[]) //function to read 100 item original prices and return total price. int i; float originalTotalPrice = 0; for(i=0; i<5; i++) //loop for read 100 item prices. { printf("Please enter item $d price: ", 1+1); //prompting the user to enter each item price. scanf("%f",&price[i]); //reading price in to array. originalTotalPrice += price[i]; //adding each item original price. } return originalTotalPrice; //returning total original price of 100 items. float newprice (float price[]) //function to calculate after tax increase and printing and return total price of 100 items after tax increase. 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 int i; float newPriceOfEachItem, eachItems PerTax, newTotalPrice = 0; for(i=0; i<5; i++) // to access 100 item prices. { eachItem PerTax = (price[i]*5)/100; // calculating each item 5 percent tax. newPriceOfEachItem = price[i] + eachItem5 Pertax; //increasing tax for each item. printf("Item 3d price after increasing of tax: 3f\n", i+1, newPriceOfEachItem); //printing prices after tax increase. newTotalPrice += newPriceOfEachItem; //adding each price after tax increase. return newTotalPrice; //returning total all 100 item prices after tax increase.

27 28 29 30 31 32 33 34 35 int main() El float price [5], originalTotalPrice, newTotalPrice; //variable declarations. originalTotalPrice = original (price); // calling the function to read 100 item original prices. newTotalPrice = newprice (price); // calling the function to calculate new price and printing. printf("\nTotal price of all 100 items before tax increase: 3f\n", originalTotalPrice); //printing total price before tax increase. printf("Total price of all 100 items after tax increase: 3f\n", newTotalPrice); //printing total price after tax increase. return 0;

output:

enter Please enter item 1 price: 5 Please enter item 2 price: 7 Please enter item 3 price: 2 Please enter item 4 price: 4 Please item 5 price: 9 Item 1 price after increasing of tax: 5.250000 Item 2 price after increasing of tax: 7.350000 Item 3 price after increasing of tax: 2.190000 Item 4 price after increasing of tax: 4.200000 Item 5 price after increasing of tax: 9.450000 Total price of all 100 items before tax increase: 27.000000 Total price of all 100 items after tax increase: 28.350002 execution time : 4.110 s Process returned @ (@xo) Press any key to continue.

Note: my friend if you have any questions or queries comment below. I am happy to answer you all questions. I will sort out your queries. Thank you my friend.