Question

Which header needs to be included in C if you are to develop a function that can accept variable number of arguments?

• A. stdio.h
• B. stdarg.h
• C. stdvarg.h
• D. arg.h

Hint:

Use \( \text{stdarg.h} \) to handle functions with a variable number of arguments, such as printf.

Answer 1

The Correct Option is B

To handle functions with variable numbers of arguments in C, you need to include the header file \( \text{stdarg.h} \). This header defines macros like \( va_list \), \( va_start \), and \( va_arg \), which allow handling variable arguments.
Thus, the correct header to include is \( \text{stdarg.h} \).