A data type used to hold information about variable arguments passed to a variadic function. It is initialized with `va_start`, used with `va_arg`, and cleaned up with `va_end`.
1st Parameter
The destination `va_list` object where the state of the source argument list will be copied.
2nd Parameter Type : va_list
A data type used to hold information about variable arguments passed to a variadic function. It is initialized with `va_start`, used with `va_arg`, and cleaned up with `va_end`.
2nd Parameter
The source `va_list` object from which the state will be copied.
Read more about parameters of va_copy in parameters section
The va_copyfunction in C language Copies the content of one va_list to another.
va_copy is a macro that copies the (previously initialized) variable argument list src to dest. This is useful in scenarios where you need to scan the argument list more than once or pass it to another function. After va_copy, dest is equivalent to src at the moment va_copy was called.
The va_copyfunction takes 2
parameters:
•
va_list `dest`: The destination `va_list` object where the state of the source argument list will be copied.
•
va_list `src`: The source `va_list` object from which the state will be copied.
Copies the state of the variable argument list `src` to the variable argument list `dest`. This allows independent traversal of the arguments. Both `dest` and `src` must eventually be terminated with `va_end`. Required for systems where `va_list` is not a simple pointer.
The va_copy function return value :
None (void function)
Output
This example demonstrates how to use va_copy to create a copy of a va_list and process both lists independently.