c / intermediate
Snippet
Variadic Functions using stdarg.h
Variadic functions allow you to pass a variable number of arguments to a function. This is achieved using the macros defined in <stdarg.h>. You must provide at least one fixed argument (like 'count') to know where the variable list starts.
snippet.c
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#include <stdarg.h>void print_log(int count, ...) {va_list args;va_start(args, count);for (int i = 0; i < count; i++) {printf("%s ", va_arg(args, char*));}va_end(args);}
Breakdown
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va_list args;
Declares a variable to hold the information needed by the macros.
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va_arg(args, char*)
Retrieves the next argument from the list, interpreted as the specified type (char*).