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  1. #include <iostream>
  2. #include <sstream>
  3. #include <iomanip>
  4.  
  5. int main() {
  6. 	int a = 42;
  7.  
  8. 	std::stringstream ss;
  9. 	ss << std::setw(4) << std::setfill('0') << a;
  10. 	std::string str = ss.str();
  11. 	std::cout << str;
  12. }
Success #stdin #stdout 0s 3472KB
comments (?)
stdin 
Standard input is empty
stdout 
0042
https://ideone.com/rVDHuY
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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