for loop in C++
Curly brace is optional. If for loop doesn't contain curly braces, only one statement following the for loop belongs to loop body. ``` #include <iostream> using namespace std; int main() { int counter, first, last, next; first = 1; last = 2; for (counter = first; counter <= last; counter++) { cout << "\n " << counter; next = counter * counter; cout << " " << next; } } ```