Thread: Program to view 10 lines of file.

I'm having trouble writing a program that counts ten lines and displays only the characters from those lines. I want the program to read the characters one at a time from the file. I have here the code I've managed to write so far. Any help would be greatly appreciated.

Code:

#include<stdio.h>
#include<stdlib.h>
#define FNLEN 100

int main(void)
{
    FILE *input;
    
    
    char infilename[FNLEN];
    char character;
    int line_count;
    
    printf("Enter name of text three you wish to preview: ");
    scanf("%s", infilename);
    
    input = fopen(infilename, "r");
    
    while ((input = fopen(infilename, "r"))) == NULL)
    {
        printf("%s is an invalid name.\n", infilename);
        printf("Please enter valid file name. ");
        scanf("%s", infilename);
    }
    while (fscanf(input, "%c", &character) != EOF)
    {
        if
    }
    
    
}

I'd use fgets to get the filename or better just pass it as a command line argument. Also you don't really need fscanf to read a file character by character, fgetc is way better.
Something like this should do the trick:

Code:

    #define N_LINES 10

    FILE *f;
    int c;
    size_t n_spaces;
    n_spaces = 0;


    while (EOF != (c = fgetc(f)) && (N_LINES + 1) != n_spaces)
    {
        if('\n' == c)
            ++n_spaces;
        if(N_LINES != n_spaces)
            putchar(c);
    }
    
    fclose(f);

Does the advice on your other thread help at all?