how to end foor loop from key press in c++ code example

Example 1: how to break from a loop in java

public class Test {

   public static void main(String args[]) {
      int [] numbers = {10, 20, 30, 40, 50};

      for(int x : numbers ) {
         if( x == 30 ) {
            break;
         }
         System.out.print( x );
         System.out.print("\n");
      }
   }
}

Example 2: in python how to end the code after 10 input

incorrect = 0
max_tries = 3
choices = ['red', 'green', 'yellow']

while incorrect < max_tries:
    user_input = raw_input()
    if user_input not in choices:
        incorrect += 1
    else:
        rest_of_the_code(user_input)
        incorrect = 0

if incorrect == max_tries:
    sys.exit(1)