题解 | #字母统计#

#include<string>
#include<iostream>
#include<cstdio>
using namespace std;
typedef struct
{
	char k;
	int num;
}T;
int main()
{
	T arr[26];
	string s;
	char c = 'A';
	for (int i = 0; i < 26; i++)
	{
		arr[i].k = c + i;
		arr[i].num = 0;
	}
	while (getline(cin, s))
	{
		for (int i = 0; i < s.size(); i++)
		{
			if (s[i] <= 'Z' && s[i] >= 'A')
			{
				arr[s[i] - c].num++;
			}
		}
		for (int i = 0; i <26; i++)
		{
			cout <<arr[i].k << ":" << arr[i].num << endl;
		}
	}
	return 0;
}