Can someone help me understand this very simple loop?

Hello,
I need to be able to know the output of this loop without a computer... I came up with i=20 s=60, but the answer is i=20 s=3 and I dont understand the logic behind it. Can someone please explain?

Code:

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int main() {
       
int i=0, s=0;
while ( i<20)
i++;
s= s+3;
printf("i=%d, s=%d\n", i, s);

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Thanks in advance

i am guessing but i would assume that because you didnt include

Code:

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{}

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That the while loop is just executing one line i.e the i++ the s=s+3 isnt in the loop and only gets called once the loop has exited i.e once i = 20

hmm that kind of makes sense:) I hope your right, thank you!