C Program to Check File Size – fseek/ftell and stat()

There are two standard ways to check file size in C: the portable fseek()/ftell() method that works with any FILE pointer, and the POSIX stat() method that reads file metadata without opening the file. This page covers both, with complete working programs, a comparison table, and when to use each. Method 1 — fseek() and …

K&R C Programs Exercise 7-8

Exercise 7-8. Write a program to print a set of files, starting each new file on a new page, with a title and a running page count for each file. Print each file with a header line (filename + page number) at the top of every page. A page is LINES_PER_PAGE lines. When a page …

C Program which produces its own source code as its output.

Write a c program which produces its own source code as its output.This C program uses the C File i/o operations like fopen(), fclose(). In this program, We pritn the source code of the program.Read more about C Programming Language . /************************************************************ You can use all the programs on www.c-program-example.com* for personal and learning purposes. …

C Program to demonstrate the ‘fgets’ function.

Program to demonstrate the ‘fgets’ function. The program will count the number of lines in a file. This is a function of the UNIX command ‘wc’. Read more about C Programming Language . /************************************************************ You can use all the programs on www.c-program-example.com* for personal and learning purposes. For permissions to use the* programs for commercial …

C Program to reverse the first n characters in a file.

This program reads a filename and a count n from the command line, reads the first n characters from the file, reverses them in-place using a two-pointer swap, and prints the result. It demonstrates combining command-line argument parsing, file I/O with fread(), and in-place string reversal in a single practical program. The original post used …

C program which copies one file contents to another file.

Copying a file in C demonstrates how to combine file I/O functions (fopen, fgetc, fputc, fclose) with command-line arguments to build a practical utility. The program reads filenames from argv, opens both files, copies byte-by-byte, and reports how many bytes were transferred. The original version used conio.h, process.h, void main(), and stored the return value …