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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	std::string str{ "[1,2,3,,,,,4]" };
  6. 	do {
  7. 		auto pos = str.find( ",," );
  8. 		if( pos == std::string::npos )
  9. 		    break;
  10. 		str.insert( pos + 1, "null" );
  11. 	} while( true );
  12. 	std::cout << str << std::endl;
  13. 	return 0;
  14. }
Success #stdin #stdout 0s 3228KB
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Standard input is empty
stdout
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[1,2,3,null,null,null,null,4]
https://ideone.com/h0NaXt
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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