Write the program to compute how many gallons of paint are needed to cover the given square feet of walls. Assume 1 gallon can cover 350.0 square feet. So gallons =the square feet divided by 350.0. If the input is 250.0, the output should be: 0.714285714286

Here is the Python and C++ program.

Python program:

gallons_paint=0.0  #declare and initialize gallons_paint  

wall_area = float(input())  #prompts user to enter wall area

gallons_paint = wall_area / 350  #formula to compute gallons of paint needed to cover the given square feet of walls

print(gallons_paint) #display the result

C++ program:

#include <iostream> //to use input output functions

using namespace std; //to identify objects like cin cout

int main(){ //start of main() function body

   float wall_area,gallons_paint=0; //declare variables

   cin>>wall_area; //reads input wall area from user

   gallons_paint=wall_area/350; //formula to compute gallons of paint needed to cover the given square feet of walls

   cout<<gallons_paint;} //print the result

Explanation:

The program prompts the user to enter the area of wall and stores the input value in wall_area

Suppose the user enters 250 as wall area

The the formula gallons_paint=wall_area/350; works as follows:

gallons_paint = wall_area/350;

                         = 250/350

                         = 0.71428

gallons_paint  = 0.71428

So the output is:

0.71428

The screenshot of the program along with its output is attached.