C++:VariadicArguments
Example
#include <iostream>
#include <cstdarg>
void simple_printf(const char* fmt...)
{
va_list args;
va_start(args, fmt);
while (*fmt != '\0') {
if (*fmt == 'd') {
int i = va_arg(args, int);
std::cout << i << '\n';
} else if (*fmt == 'c') {
// note automatic conversion to integral type
int c = va_arg(args, int);
std::cout << static_cast<char>(c) << '\n';
} else if (*fmt == 'f') {
double d = va_arg(args, double);
std::cout << d << '\n';
}
++fmt;
}
va_end(args);
}
int main()
{
simple_printf("dcff", 3, 'a', 1.999, 42.5);
}
See also
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