Pre-increment vs post-increment in CPP.

plus.cpp

#include <iostream>

using namespace std;

void pre_increment() {
	// Pre-increment.
	// i is: 1
	// j is: 1
	// ++i
	int i(0);
	int j;
	j = ++i;

	cout << "Pre-increment." << endl;
	cout << "i is: " << i << endl;
	cout << "j is: " << j << endl;
}

void post_increment() {
	// Post-increment.
	// i is: 1
	// j is: 0
	// i++
	int i(0);
	int j;
	j = i++;

	cout << "Post-increment." << endl;
	cout << "i is: " << i << endl;
	cout << "j is: " << j << endl;
	cout << "j is: " << j << endl;
}

int main() {
	pre_increment();
	post_increment();
}