va_arg_23v

#include "stdafx.h"
#include <stdio.h>
#include <cstdlib>
#include <stdarg.h>
#include <iostream>
#include <vector>


using namespace std;

void sc(char *format, ...);

struct complex
{
    int real, img;
};
int main() {
    sc("%d%f%r%i", 9, 8.5, 1, -3);
    system("pause");
    return 0;
}

void sc(char *format, ...) {
    int i_val;
    double d_val;
    struct complex a;
    va_list ap;
    va_start(ap, format);
    for (char *p = format; *p; p++)
    {
        if (*p == '%')
        {
            switch (*++p)
            {
            case 'd': i_val = va_arg(ap, int);
                cout << i_val << " "; break;
            case 'f': d_val = va_arg(ap, double);
                cout << d_val << " "; break;
            case 'r': a.real = va_arg(ap, int);
                cout << a.real; break;
            case 'i': a.img = va_arg(ap, int);
                cout << a.img <<"i"; break;
            default: cout << "ERROR"; break;

            }
        }
        else cout << *p << " ";
    }
    va_end(ap);
}