Question

In C code

Directions: Write fully executable code when answering the following:

1. Write a function prototype for a function called GetInput that takes no arguments. The function will ask, get, and then return a double value input from the user.

2. Write the function definition for GetInput

3. Write the function call to GetInput using the variable points that has already been declared

Answer 1

Code:

#include<stdio.h>
// Declaring function prototype.
double GetInput();
int main()
{
   // Calling the function from the main function.
   double hold=GetInput();
   printf("The value returned by the function: %lf ",hold);
   return 0;
}
// This is the function definition or implementation.
double GetInput()
{
   double d;
   printf("Enter a double value:");
   //Getting in put from the user. Here %lf is format specifier used to specify double datatype.
   scanf("%lf",&d);
   return d;
}

Output: