题解 | #统计字符#

/*
思路：
1. 获取字符串
2. 遍历字符串
*/ 

#include <iostream>
using namespace std;

int main() {
    string str;
    getline(cin, str);
    int a = 0, b = 0, c = 0, d = 0;
    for(auto ch : str){
        if(ch >= 'a' && ch <= 'z') a++;
        else if(ch == ' ') b++;
        else if(ch >= '0' && ch <= '9') c++;
        else d++;
    }

    cout << a << endl;
    cout << b << endl;
    cout << c << endl;
    cout << d << endl;

    return 0;
}
// 64 位输出请用 printf("%lld")