Check out example codes for "c++ for loop". It will help you in understanding the concepts better.

Code Example 1

for (int i = 0; i < 5; i++) 
{
  cout << i << "\n";
}

Code Example 2

for (int i = 0; i <= 10; i = i + 2) {
    cout << i << "\n";
}

Code Example 3

#include <iostream>
#define FOR(i,a) for (int i = 0; i < a; i++)

FOR(i, 3) cout << i << endl;

Code Example 4

//'i' can be any number
//Can be any comparison operater 
//can be any number compared
//can be any mathmatic operater

for (int i = 0; i<100; i++){
//Do thing
}

//more info on operaters
//https://www.w3schools.com/cpp/cpp_operators.asp

Code Example 5

for(int i=0; i<=limit; i++)
{
	//statement
}

Code Example 6

for (int i = 0; i < 10; i++)
    {
        cout << i << endl;
    }

Learn ReactJs, React Native from akashmittal.com