题解 | #字符的个数#

#include<bits/stdc++.h>
using namespace std;
int main() {
    string s;
    cin >> s;
    // write your code here......
    int num_a = 0;
    int num_b = 0;
    int num_c = 0;
    int len = 0;

    len = s.length();

    for (char c : s) {
        switch (c) {
            case 'a':
                num_a++;
                break;
            case 'b':
                num_b++;
                break;
            case 'c':
                num_c++;
                break;
        }
    }

    cout << num_a << " " << num_b << " " << num_c << endl;

    return 0;
}