Issue with one of the c++ questions

Question

I’m having a problem with one of the questions that’s asking to create a for loop that starts at 0 and ends at 20 that output the even numbers. The problem is that when I go to input x <= 20, it implies that I need to enter a 3rd character in that 20 position. Am I doing it wrong or is the an issue.

Answer 1

for(int x=0; x<=20;x+=2)
{
printf("%d",x);
}

are you talking about this quiz in C++ language

Answer 2

Can you please link the code

Answer 3

~swim~ is right. I forgot about the semicolon. I was too focused on entering a number and forgot to put it there. thank you very much mohit and swim i got it now.