题解 | #统计字符串中各字母字符对应的个数#

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

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

    std::string strs(str);

    std::map<char, int> charCounts;
    for (char c : strs) {
        if (std::isalpha(c)) {
            charCounts[(c)]++;
        }
    }

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

    return 0;
}