Question

How to count the number of each vowel in a string with C++

Answer 1

#include <iostream>
#include <string>
#include <map>

std::map<char, int> CountNumberOfEachVowelInString(const std::string& s) {
    std::string vowels = "aeiou";
    std::map<char, int> countVowels;

    for (char ch : vowels) {
        countVowels[ch] = 0;
    }

    return countVowels;
}

int main() {
    std::string s = "python c c++ c# java php javascript";

    std::map<char, int> countVowels = CountNumberOfEachVowelInString(s);

    for (char ch : s) {
        if (countVowels.find(ch) != countVowels.end()) {
            countVowels[ch]++;
        }
    }

    for (const auto& pair : countVowels) {
        std::cout << pair.first << ": " << pair.second << std::endl;
    }
}




/*
run:

a: 4
e: 0
i: 1
o: 1
u: 0

*/

 

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