c - How to find EOF through fscanf?

Question

I am reading matrix through file with the help of fscanf(). How can i find EOF? Even if i try to find EOF after every string caught in arr[] then also i am not able to find it.

with the help of count i am reading the input file

-12 23 3

1 2 4

int main()
{
    char arr[10],len;
    int count=0;

    FILE *input= fopen("input.txt", "r");

    while(count!=7)
    {   
           fscanf(input,"%s",arr);
          //storing the value of arr in some array.
                   len=strlen(arr);
           count++;

           if(arr[len+1]==EOF)
           printf("
i caught it
");//here we have to exit.
    }
return 0;
}

Instead of count i want to exit through the loop with the EOF . how can it be solved?

Answer 1

fscanf - "On success, the function returns the number of items successfully read. This count can match the expected number of readings or be less -even zero- in the case of a matching failure. In the case of an input failure before any data could be successfully read, EOF is returned."

So, instead of doing nothing with the return value like you are right now, you can check to see if it is == EOF.

You should check for EOF when you call fscanf, not check the array slot for EOF.