Implementation of Default Arguments in C using struct
Implementation of Default Arguments in C using struct:
#include <stdio.h>
//First step - create structure with the arguments
typedef struct {
int id;
int age;
float salary;
} bio_t;
//Second step - create actual function and pass the structure as argument
void _set_bio(const bio_t B)
{
printf("%d, %d, $%.2f\n", B.id, B.age, B.salary);
}
//Step three - create macro using ellipsis notation
#define set_bio(...) _set_bio((bio_t) {__VA_ARGS__});
int main()
{
set_bio();
set_bio(1);
set_bio(1, 40);
set_bio(2, 38, 5000);
set_bio(.salary=7777.7);
return 0;
}