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  1. #include <sstream>
  2. #include <string>
  3. #include <iostream>
  4.  
  5. int main ()
  6. {
  7.     std::stringstream ss;
  8.     ss << 55;
  9.  
  10.     const char* c1 = ss.str().c_str(); // *c1 = \0
  11.     std::cout << c1 << std::endl;
  12.  
  13.     // looks to be doing the same, but in stages
  14.     std::string s = ss.str();
  15.     const char* c2 = s.c_str(); // *c2 = "55"
  16.     std::cout << c2 << std::endl;
  17. }
Success #stdin #stdout 0s 3472KB
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stdin
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Standard input is empty
stdout
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55
55
https://ideone.com/SAbOJ4
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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