sscanf problems

I have made a program to accept integers only however if i put a 25e in it it still works how do i fix it?

Code:

---

char line[MAXLINE];
int error, n;

do
{
    printf("Input a positive integer:  ");
    fgets(line, MAXLINE, stdin);
    error = sscanf(line, "%d", &n) != 1 || n <= 0;
    if(error)
        printf("\nERROR: Do it again. \n");
 }while (error);

---

Use strtol(). It will show you if any extra non-digit characters were in the buffer.

i have to use sscanf and i am not familiar with this

Then I believe you have to manually check variable line yourself and see if it contains any non-digit chars.

Something of a "short" version.

Or that. Nice solution. :)