What is the output

Question

https://code.sololearn.com/chP1pvEoaDF6/?ref=app

Answer 1

int main() {
int sum=0;
for(int i=0;i<2;i++); // <===

{
sum+=1;
}
cout<<sum;
return 0;
}

Note that there is a ' ; ' after for loop
Hence the for loop iterates without executing block of code
Hence after for loop completes iterations it executes
sum+=1

Hence sum is 1