.cpp

Code

/*
    testVar.cpp
    David G. Klick
    CIS 250
    2006-02-20

    Demonstrates use of variable argument list.
    Do NOT do this in C++ if you can avoid it
    (and you CAN avoid it).
*/

#include <cstdio>
#include <cstdarg>

void display(const char* fmt, ...);

int main(void) {
    display("iff", 15, 6.8, 3.2);
    return 0;
}

void display(const char* fmt, ...) {
    va_list varlist;
    char c;
    const char *p = fmt;
    va_start(varlist, fmt);
    while (c = *p) {
        switch (c) {
        case 'i':
            printf("%d ", va_arg(varlist, int)); break;
        case 'f':
            printf("%f ", va_arg(varlist, double)); break;
        default: printf("%c", c);
        }
        p++;
    }
    printf("\n");
    va_end(varlist);
}