Write a function double read_double(string prompt) that displays the prompt string, followed by a space, reads a floating-point number in, and returns it. Here is a typical usage: g

Written in C++

double read_double(string prompt) {

   cout<<prompt;

   double num;

   cin>>num;

   return num;

}

Explanation:

This line defines the function

double read_double(string prompt) {

This line displays the passed string

   cout<<prompt;

This line declares a double variable

   double num;

This line gets the input

   cin>>num;

This line returns the input

   return num;

}

See attachment for full program

E

All decision variables must be integer

Explanation:

The integer-linear program is a program in which the objective function and any constraints are all linear ie all of the variables are restricted to be integers.

A linear program is Np complete. Also every decision variable appear in any constraints must also appear in the objective function, possibly with zero coefficient if needed.