题解 | #字母统计#

#include "bits/stdc++.h"

using namespace std;
int main()
{
    string str;
    int number[26];
    while (cin>>str)
    {
        memset(number,0,sizeof(number));
        for (int i = 0; i < str.size(); ++i) {
            if ('A'<=str[i]&&str[i]<='Z')
            {
                number[str[i]-'A']++;
            }
        }
        for (int i = 0; i < 26; ++i) {
            printf("%c:%d\n",'A'+i,number[i]);
        }
    }
}