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  1. #include <iostream>
  2. #include <iomanip>
  3. #include <sstream>
  4. #include <string>
  5.  
  6. std::string getFloatWithoutLeadingZero(float val)
  7. {
  8.     std::stringstream ss;
  9.     ss << std::setw(2) << std::setprecision(1);
  10.     ss << std::fixed << val;
  11.  
  12.     std::string str = ss.str();
  13.     if(val > 0.f && val < 1.f)
  14.         return str.substr(1, str.size()-1);
  15.     else if(val < 0.f && val > -1.f)
  16.         return "-" + str.substr(2, str.size()-1);
  17.     return str;
  18. }
  19.  
  20. int main()
  21. {
  22. 	std::cout << getFloatWithoutLeadingZero( .1337f) << std::endl;
  23.     std::cout << getFloatWithoutLeadingZero(-.1337f) << std::endl;
  24.     std::cout << getFloatWithoutLeadingZero( 42.f) << std::endl;
  25.     std::cout << getFloatWithoutLeadingZero(-42.f) << std::endl;
  26.  
  27.     return 0;
  28. }
  29.  
Success #stdin #stdout 0s 3432KB
comments (?)
stdin 
Standard input is empty
stdout 
.1
-.1
42.0
-42.0
https://ideone.com/RStlSy
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
secret

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