Print octal number in c++

// modify basefield
#include <iostream>     // std::cout, std::dec, std::hex, std::oct

int main () {
  int n = 70;
  std::cout << std::dec << n << '\n';
  std::cout << std::hex << n << '\n';
  std::cout << std::oct << n << '\n';
  return 0;
}

Source: cplusplus.com

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