#include <iostream>
#include <conio.h>

using namespace std;

void passbyvalue(int); //function declaration

int main() 
{
	int a = 5;
	
	cout << "a value in main() before function call: " << a << endl; //5
	passbyvalue(a);
	cout << "a value in main() after function call: " << a << endl; //5
	
    return 0;
}

//function definitation
void passbyvalue(int a) {
	a = 3;
	cout << "a value in passbyvalue(): " << a << endl; //3
}