CPP-Reading till end of file doubt

#1

#include
#include<conio.h>
using namespace std;
int main()
{
int a;
while(scanf("%d",&a)!=EOF)
{
cout<<a*a<<endl;
}
return 0;
}
I tried this same program taught to me in the video but is is showing error in sublime text 3… Why?? Is this program wrong??

#2

hey @Sheenagoyal21, this code is working absolutely fine here. May there is some issue with the compiler there.

#3

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