For Loop

Squares.C

#include <iostream> #include <iomanip> using namespace std; int main() { int limit; cout << "Limit: "; cin >> limit; for (int n(1); n <= limit; n += 1) { cout << setw(4) << n << setw(11) << n*n << endl; } }

for ( initialization ; condition ; expression ) statement

is almost equivalent to
{
   initialization ;
   while ( condition ) {
      statement
      expression ;
   }
}

The initialization, the condition, and the expression may be empty. If the condition is omitted, the loop runs forever.

The scope of n is limited to the for statement.