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How to extract only characters, numbers and spaces from a string in C++

1 Answer

0 votes
#include <iostream>
  
using namespace std; 
 
string extract_characters_numbers_spaces(string s) { 
    int len = s.length(); 
     
    string result = ""; 
    for (int i = 0; i < len; i++) { 
        char ch = s.at(i); 
        if (isalpha(ch) || isdigit(ch) || ch == ' ') 
            result += ch; 
    } 
    return result;
} 
     
int main() 
{ 
    string s("c++14$vb.NET&^java*() php <>/python 3.7.3"); 
   
    cout << extract_characters_numbers_spaces(s);
       
    return 0; 
} 
   
   
/*
run:
   
c14vbNETjava php python 373
   
*/

 




answered Aug 13 by avibootz
edited Aug 14 by avibootz
...