How to Convert Integers to Strings in C without itoa()?

Converting Integers to Strings in C Without itoa()

Question:

Seeking an alternative to itoa() for integer-to-string conversion in C , as it generates warnings in Visual Studio and compilation errors in Linux.

Answer:

Fortunately, C offers multiple solutions:

C 11 and Beyond:

• std::to_string: This function directly converts an integer to a string:

  #include <string>
  
  int i = 5;
  std::string s = std::to_string(i);

Pre-C 11:

• C Streams: Leverage the following stream manipulation:

  #include <sstream>
  
  int i = 5;
  std::stringstream out;
  out << i;
  std::string s = out.str();

• Additional Notes:

The example in question has been adapted from http://notfaq.wordpress.com/2006/08/30/c-convert-int-to-string/.

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