Function to read files c

Always expect errors. Add a comment. Active Oldest Votes. Improve this answer. Gangadhar Gangadhar 9, 3 3 gold badges 29 29 silver badges 49 49 bronze badges. My function is under edit label in first post — Wit.

Check with gdb do back trace and found which line is causing seg fault. This code will cause a segmentation fault on my machine. Quick question: Will this be less efficient than reading to a buffer char array in a single read call, then iterate through the characters in the buffer?

I imagine invoking read for each single character is more costly than reading to a buffer Show 1 more comment. Abdullah Arshad Abdullah Arshad 86 1 1 silver badge 4 4 bronze badges. Gaurav Gaurav 1, 16 16 silver badges 20 20 bronze badges. The thing is I cant, I have to use read becouse it is my HW. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password.

Post as a guest Name. Boolean Values Boolean Expressions. Create References Memory Address. Create Pointers Dereferencing Modify Pointers. Class Description ofstream Creates and writes to files ifstream Reads from files fstream A combination of ofstream and ifstream: creates, reads, and writes to files. Why do we close the file? It is considered good practice, and it can clean up unnecessary memory space. Report Error. You can use the fopen function to create a new file or to open an existing file.

This call will initialize an object of the type FILE , which contains all the information necessary to control the stream. Opens a text file for writing. If it does not exist, then a new file is created. Here your program will start writing content from the beginning of the file.

Opens a text file for writing in appending mode. Here your program will start appending content in the existing file content. Opens a text file for both reading and writing. It first truncates the file to zero length if it exists, otherwise creates a file if it does not exist.

It creates the file if it does not exist. The reading will start from the beginning but writing can only be appended. The fclose - function returns zero on success, or EOF if there is an error in closing the file. This function actually flushes any data still pending in the buffer to the file, closes the file, and releases any memory used for the file.