fork download 
  1. #include <iostream>
  2. #include <stdexcept>
  3.  
  4. namespace cpp {
  5.  
  6. void printf(const char* s)
  7. {
  8.   while (*s) {
  9.     if (*s == '%' && *++s != '%') 
  10.       throw std::runtime_error("invalid format string: missing arguments");
  11.     std::cout << *s++;
  12.   }
  13. }
  14.  
  15. template<typename T, typename... Args>
  16. void printf(const char* s, const T& value, const Args&... args)
  17. {
  18.   while (*s) {
  19.     if (*s == '%' && *++s != '%') {
  20.       std::cout << value;
  21.       return printf(++s, args...);
  22.     }
  23.     std::cout << *s++;
  24.   }
  25.   throw std::runtime_error("extra arguments provided to printf");
  26. }
  27.  
  28. } // namespace cpp
  29.  
  30. int main()
  31. {
  32.     // classic printf
  33.     printf("%u\n", -1);
  34.  
  35.     // C++ variadic printf
  36.     cpp::printf("%u\n", -1);
  37. }
Success #stdin #stdout 0s 2884KB
comments (?)
stdin 
Standard input is empty
stdout 
4294967295
-1
https://ideone.com/M5R9yu
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!