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>
using namespace std;

int main() {

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

    // write your code here......
    map<char, int> m;
    for (int i = 0; str[i] != '\0'; i++) {
        if (isalpha(str[i]))
            m[str[i]]++;
    }
    map<char, int>::iterator it = m.begin();
    while (it != m.end()) {
        cout << it->first << ":" << it->second << endl;
        it++;
    }
    return 0;

    return 0;
}