In many programming languages, including C, C++, and others, printf is a commonly used function for outputting text and variables to the console or terminal.
The _printf function is a custom implementation of the standard printf function in C. It takes a format string as its first argument, which may contain format specifiers starting with %, followed by zero or more arguments to be formatted and printed. The function processes the format string, converts the arguments to the specified format, and outputs the formatted string to the standard output.
int _printf(const char *format, ...);