How codepad know about infinite loop?

Question

I tried the following code:

#include<stdio.h>

main()
{
    int i;
    for(i=1;i<50;i++){
    printf("Hello World");
    }
}

and

#include<stdio.h>

main()
{
    int i;
    while(1){
    printf("Hello World");
    }
}

codepad shows "Time out". Does it have syntax-checks or does it simply check if my program takes up too much time?

Answer 1

It looks like codepad has limits for resources used by submitted programs, and stops the ones that are beyond them.

Your infinite loop program exceeds the time limit, and is stopped with "Time out" message. So there's nothing related to syntax checking here.