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  1. #include <cstring>
  2. #include <iostream>
  3. #include <string>
  4.  
  5. void TransformString(const char *in_c_string, char *out_c_string) {
  6. 	size_t length = strlen(in_c_string);
  7.  
  8. 	for (size_t i = 0; i < length; ++i)
  9. 		out_c_string[i] = '*';
  10.  
  11. 	out_c_string[length] = 'a';
  12. 	out_c_string[length+1] = 'b';
  13. 	out_c_string[length+2] = 'c';
  14. 	out_c_string[length+3] = '\0';
  15. }
  16.  
  17. std::string TransformString(const std::string &in_string) {
  18. 	std::string out;
  19. 	out.resize(100);
  20.  
  21. 	TransformString(in_string.c_str(), &out[0]);
  22.  
  23. 	out.resize(strlen(&out[0]));
  24.  
  25.     // IIRC there are some C++11 rule that allow 'out' to be moved here (if it isn't RVO'd anyway)
  26. 	return out;
  27. }
  28.  
  29. int main() {
  30. 	std::string string_out = TransformString("hello world");
  31.  
  32. 	char charstar_out[100];
  33. 	TransformString("hello world", charstar_out);
  34.  
  35. 	std::cout << string_out << "\n";
  36. 	std::cout << charstar_out << "\n";
  37.  
  38. 	return 0;
  39. }
Success #stdin #stdout 0s 3428KB
comments (?)
stdin 
Standard input is empty
stdout 
***********abc
***********abc
https://ideone.com/xwVWCh
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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