More context would help, as an end of file error is usually an error with syntax, and your syntax seems fine.

For future reference, I recommend you present your code in some sort of copy-pastable format instead of an image so people can run your code locally and better debug it.

Will you provide the problem statement?

I am not so sure..but you can try this.... and when you want to end your program press Ctrl+z and enter...if this solve your problem then you are welcome otherwise very sorry...

include<stdio.h>

int main()

{

int t,n,i,j,sum1,sum2;

while(scanf("%d",&t)!=EOF)
{
    for(i=0;i<t;i++)
    {
        scanf("%d",&n);

    }
}

}

You're using the same loop variable $$$i$$$ in both outer and inner loops, which messes up the outer loop and you probably read an incorrect amount of test cases.

In the future upload the code in copy-able format (e.g. pastebin or submission link) and definitely give the problem statement.