Thread: End of file

Hi I'm using Linux.
I have the following code:

Code:

    c = getchar();
    no_rows = 0;
    total = 0;
    while(c != EOF)
{....}

in my main function, and it doesnt work when I press ctrl-d in the terminal window to stop the loop.

If I change this to:

Code:

    no_rows = 0;
    total = 0;
    while((c = getchar()) != EOF)
    {....}

it works. Strange. I thought they would do the same thing. Anyone has an answer to this?

Thanks!

I call getchar in an inner loop.
Here's the full program:

Code:

#include <stdio.h>

int main(void)
{
    int no_in_row, total, no_rows, c;
    float average;

    
    
    no_rows = 0;
    total = 0;
    while((c = getchar()) != EOF)
    {
    
        no_in_row = 0;
        while(c != '\n')
        {
            c = getchar();
            if(c != ' ')
                no_in_row++;
        } // Inner loop
        no_rows++;
        total = total + no_in_row;
    } // Outer loop
    
    printf("Total: %d, no_rows: %d\n", total, no_rows);
    //printf("No in row %d\n", no_in_row);
    average = (float)total / no_rows;
    printf("Average characters in a row: %.2f\n", average);
    return 0;
}

Oh now I got it. I added a c = getchar() inside the outer loop too. Thanks a lot again Laserlight!!!

Yep I did that after.

Code:

#include <stdio.h>

int main(void)
{
    int no_in_row, total, no_rows, c;
    float average;

    
    c = getchar();
    no_rows = 0;
    total = 0;
    while(c != EOF)
    {
    
        no_in_row = 0;
        while((c != '\n') && (c != EOF))
        {
            if(c != ' ')
                no_in_row++;
            
            c = getchar();
        } // Inner loop
        no_rows++;
        total = total + no_in_row;
    
        c = getchar();
    } // Outer loop
    
    average = (float)total / no_rows;
    
    printf("\nTotal: %d, no_rows: %d\n", total, no_rows);
    printf("Average characters in a row: %.2f\n", average);
    
    
    //printf("No in row %d\n", no_in_row);
    
    
    
    return 0;
}