Fix the program

This program isn't compiling. Think about why, and come with a solution to fix it.

#include <iostream>

int main() 
{
	int size = 5;
	float farray[size];
	farray[0] = 1;
	farray[1] = 3;
	farray[2] = 5;
	farray[3] = 7;
	farray[4] = 9;

	for (int i = 0; i < 5; i++)
		std::cout << farray[i] << " - ";
}

1 - 3 - 5 - 7 - 9 - 

Answer

The array size isn't known at compile time.

The size of the array has to be known at compile time, and the value 5 is assigned to size when the program runs, not when it compiles.

You might be able to tell what the value of size is when the code execution reaches float farray[size] but without running the program, the compiler can't be sure.

To fix this program we would simply use an array size that's known at compile time.

#include <iostream>

int main() 
{
	int size = 5;
	float farray[5];
	farray[0] = 1;
	farray[1] = 3;
	farray[2] = 5;
	farray[3] = 7;
	farray[4] = 9;

	for (int i = 0; i < 5; i++)
		std::cout << farray[i] << " - ";
}