Question

How to count the number of characters in a string without spaces and special characters in C++

Answer 1

#include <iostream>
#include <string>
#include <functional> 

void remove_non_lphabetic_characters(std::string& str) {
    str.erase(std::remove_if(str.begin(), str.end(), [](char c) { 
        return !std::isalpha(c); 
    }), str.end());
}
 
int main() {
    std::string str = "8go@ c# rust java 123 c &c++.";
 
    remove_non_lphabetic_characters(str);
    
    int result = str.length();
 
    std::cout << result << std::endl;
}
    
    
    
/*
run:
    
13
    
*/

 

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