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  1. #include <iostream>
  2. #include <string>
  3. using namespace std;
  4.  
  5. int main()
  6. {
  7.     size_t i, j, len;
  8.     string str, str2;
  9.  
  10.     cout << "Enter string: ";
  11.     getline(cin, str);
  12.  
  13.     len = str.length();
  14.     str2.reserve(len);
  15.  
  16.     for(i = 0; i < len; ++i)
  17.     {
  18.         char ch = str[i];
  19.         if (ch != ' ')
  20.             str2 += ch;
  21.     }
  22.  
  23.     cout << str2 << endl;
  24.  
  25.     //system("pause");
  26.     return 0;
  27. }
Success #stdin #stdout 0s 4540KB
comments (?)
stdin
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Hello World    is this working?
stdout
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Enter string: HelloWorldisthisworking?
https://ideone.com/CvIFwx
language:
C++14 (gcc 8.3)
created:
6 years ago
visibility:
public

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