Stdio

The stdio.h header gives C standard input and output library functions. It is used to perform input and output operations in C programming language.

Functions

• printf(): Used to print the formatted output to the screen.
• scanf(): Used to read the formatted input from the standard input device.
• putchar(): Used to print a character to the screen.
• getchar(): Used to read a character from the standard input device.
• puts(): Used to print a string to the screen.
• gets(): Used to read a string from the standard input device.
• fopen(): Used to open a file.
• fclose(): Used to close a file.
• getc(): Used to read a character from a file.
• putc(): Used to write a character to a file.
• fgets(): Used to read a string from a file.
• fputs(): Used to write a string to a file.
• fprintf(): Used to print the formatted output to a file.
• fscanf(): Used to read the formatted input from a file.