题解 | #统计字符串中各字母字符对应的个数#

#include <iostream>
// write your code here......
#include <map>
#include <cctype>
using namespace std;

int main() {

    char str[100] = { 0 };
    cin.getline(str, sizeof(str));

    // write your code here......
    map<char, int> charCount;

    for (int i = 0; str[i] != '\0'; ++i) {
        if (isalpha(str[i])) {
            charCount[str[i]]++;
        }
    }

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

    return 0;
}