Question

How to implement a function that remove all occurrences of a character in a string with C++

Answer 1

#include <iostream>
 
using namespace std;
 
string remove_all_occurrences(string  s, int ch) { 
    int j, len = s.length(); 
     
    for (int i = j = 0; i < len; i++) 
       if (s[i] != ch) 
          s[j++] = s[i]; 
       
    s[j] = '\0'; 
     
    return s;
} 
 
int main() {
    string s = "c++ programming version 14"; 
     
    string new_s = remove_all_occurrences(s, 'o'); 
     
    cout << new_s; 
}
 
 
/*
run:
 
c++ prgramming versin 14
 
*/

 

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Answer 2

#include <iostream>
  
using namespace std;
  
string remove_all_occurrences(string  s, int ch) { 
    string new_s;
    int len = s.size();
    
    for(size_t i = 0; i < len; i++)
        if (s[i] != ch) new_s += s[i];
      
    return new_s;
} 
  
int main() {
    string s = "c++ programming version 14"; 
      
    string new_s = remove_all_occurrences(s, 'o'); 
      
    cout << new_s; 
}
  
  
/*
run:
  
c++ prgramming versin 14
  
*/

 

Learn SQL from A to Z at LearnSQL.com