Search This Blog

Saturday 19 November 2016

C Program to Read a Line From a File and Display it

#include <stdio.h>
#include <stdlib.h> // For exit() function
int main()
{
    char c[1000];
    FILE *fptr;

    if ((fptr = fopen("program.txt", "r")) == NULL)
    {
        printf("Error! opening file");
        // Program exits if file pointer returns NULL.
        exit(1);         
    }

    // reads text until newline 
    fscanf(fptr,"%[^\n]", c);

    printf("Data from the file:\n%s", c);
    fclose(fptr);
    
    return 0;
}
If the file program.txt is not found, this program prints error message.
If the file is found, the program saves the content of the file to a string c until '\n' newline is encountered.
Suppose, the program.txt file contains following text.
C programming is awesome.
I love C programming.
How are you doing?
The output of the program will be:
Data from the file: C programming is awesome.

No comments:

Post a Comment