The variable Counter is available for modification within the loop: first loop: counter =0; counter = 0 +1; counter = 1+1 (counter ++); second loop: counter = 2; counter =2+1; counter = 3+1 (counter ++); ... fifth loop: counter: 8; counter = 8+1; counter = 9+1 (counter ++); So, loop will execute the code 5 times