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How to extract only special characters from a string in C++

1 Answer

0 votes
#include <iostream>
 
using namespace std; 

string extract_special_characters(string s) { 
    int len = s.length(); 
    
    string pecial_characters = ""; 
    for (int i = 0; i < len; i++) { 
        char ch = s.at(i); 
        if (!isalnum(ch) || ch == ' ') 
            pecial_characters += ch; 
    } 
    return pecial_characters;
} 
    
int main() 
{ 
    string s("c++14$vb.net&^java*() php <>/python 3.7.3"); 
  
    cout << extract_special_characters(s);
      
    return 0; 
} 
  
  
/*
run:
  
++$.&^*()  <>/ ..
  
*/

 




answered Aug 13 by avibootz
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