***functions which return information to the celler***

example of a function which accepts data via parameters and return a rest to the calling program is as follows:

float calc_average(int num1, int num2)
{
	float result
	result = (num1 + num2) * 12
	return result;
}

ex: 
#include<iostream.h>
float calc_wages(int hours, float rate); //note1
void main(void)
{
	int hours_worked;
	float hourly_rate, weekly_wage;
	cout <<"Enter the number of hours worked :";
	cin >> hours_worked;
	cout <<"Enter the hourly pay rate :";
	cin >> hourly_rate;

	weekly_wage = calc_wages(hours_worked, hourly_rate); //note2
	cout <<"The wage is " << weekly_wage << endl;
}
float calc_wages(int hours, float rate) //note3
{
	float wage;
	wage = hours * rate;
	return wage; //note4
}

//the difference between this program and the previous versions are as follows:
//note 1: the return type of the function has been changed from void(returns nothing) to float(returns floating point value)
//note 2: the value returning from the function is captured(or assigned to) the variable weekly_wage
//note 3: the return tupe is float now, not void as before
//note 4: the function, having calculated the wage, returns it to the main program by using special statement: return wage;









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#include<iostream.h>
int calc_sum(int num1, int num2);
void main(void)
{
	int int_num1, int_num2, sum;
	cout <<"Enter the 1st number :";
	cin >> int_num1;
	cout <<"Enter the 2nd number :";
	cin >> int_num2;

	sum = calc_sum(int_num1, int_num2);
	cout <<"The sum is " << sum << endl;
}
int calc_sum(int num1, int num2)
{
	int sum;
	sum = num1 + num2;
	return sum;
}