C programming file operations example

From the output, you can see that the File. ReadAllLines command returned both the lines from our file Example. This method is used to read all the lines in a file at once.

The lines are then stored in a string variable. ReadAlltext command returned both the lines from our file Example. The method is used to make a copy of an existing file. When the above code is set, and the project is run using Visual Studio, the file Example.

The method is used to delete an existing file. Skip to content. C for Loop. Arrays in C Programming. Pointers in C. Find roots of a quadratic equation. Print Pyramids and Patterns. Check prime number. Print the Fibonacci series. Reference Materials string. Start Learning C. An easier way to get to the required data can be achieved using fseek. The first parameter stream is the pointer to the file.

The second parameter is the position of the record to be found, and the third parameter specifies the location where the offset starts.

This program will start reading the records from the file program. Course Index Explore Programiz. Popular Tutorials Data Types in C. C for Loop. Arrays in C Programming. Pointers in C. Find roots of a quadratic equation. Print Pyramids and Patterns. Check prime number. Print the Fibonacci series. Reference Materials string. Start Learning C.

Explore C Examples. Related Topics Write a Sentence to a File. Read the First Line From a File. C clearerr. Display its own Source Code as Output. C "Hello, World! But in the software industry, most of the programs are written to store the information fetched from the program. One such way is to store the fetched information in a file. Functions in File Operations: Opening or creating file For opening a file, fopen function is used with the required access modes.

Some of the commonly used file access modes are mentioned below. If the file is opened successfully fopen loads it into memory and sets up a pointer which points to the first character in it. If the file cannot be opened fopen returns NULL. If the file does not exist, fopen returns NULL. If the file exists, its contents are overwritten. Returns NULL, if unable to open file. If the file does not exist, it will be created.