Can not get my code to work

To learn C/C++, I recommand these books, and learning the debugger is mandatory:

Here is links to references books on C and C++ by the authors of the languages. Note than C is the ancestor of C++, so knowing C is always useful with C++.
The C Programming Language - Wikipedia, the free encyclopedia[^]
https://hassanolity.files.wordpress.com/2013/11/the_c_programming_language_2.pdf[^]
http://www.ime.usp.br/~pf/Kernighan-Ritchie/C-Programming-Ebook.pdf[^]

C++ Programing Language[^]


You should learn to use the debugger as soon as possible. Rather than guessing what your code is doing, It is time to see your code executing and ensuring that it does what you expect.

The debugger allow you to follow the execution line by line, inspect variables and you will see that there is a point where it stop doing what you expect.
Debugger - Wikipedia, the free encyclopedia[^]
Mastering Debugging in Visual Studio 2010 - A Beginner's Guide[^]

The debugger is here to show you what your code is doing and your task is to compare with what it should do.
When the code don't do what is expected, you are close to a bug.

Hello @ member 12805452 it sounds like getTeacherCount should have been returning 0 instead :P (THIS IS A JOKE DON'T DIVIDE BY 0 IN C it can have funny effects depending on your setup.)

The only problem i see with the logic is the return 0 from the calculateResults

I was Taught it is a good idea to prototype above main then put the function definitions below soo i did that here.

//Example program
#include <iostream>
#include <string>
int getStudentCount();
int getTeacherCount();
int calculateResult(int numStudents, int numTeacher);
void printResults(int classSize);

int main()
{
	int numStudents = getStudentCount();
	int numTeacher = getTeacherCount();
	int classSize = calculateResult(numStudents, numTeacher);
	printResults(classSize);
	while(1);//never lets the program end MUHAHAHAHAHAHA 
                 //Ctrl+c to exit a cmd prompt app
	return 0;// without returning an int here the compiler will complain
}
int getStudentCount()
{
	std::cout << "Enter number of students";
	int numStudents;
	std::cin >> numStudents;
	return numStudents;
} 
int getTeacherCount()
{
	std::cout <<"Enter number of teacher:";
	int numTeacher;
	std::cin >> numTeacher;
	return numTeacher;
}
int calculateResult(int numStudents, int numTeacher)
{
	int classSize;
	int classSize = numStudents / numTeacher;
	cout << classSize;  // was this just an attempt at debugging, 
	return classSize;               //or did you actually want to echo this?
}  
void printResults(int classSize)
{
	std::cout <<"The average is: " << classSize << std::endl;
 
}

O and like what everyone else was saying, if you have a debugger at your disposal you should master it.