what is for (; ; ); in c++ code example

Example: for c++

#include <iostream>
#include <stdlib.h>

/*====================================
*           eXcript.com
*          fb.com/eXcript
* ====================================*/

using namespace std;

int main() {
    for(int i = 0; i <= 10; i++){
        cout << "O valor de i eh igual: " << i << endl;
    }

    system("pause");
    return 0;
}