#include <iostream>

using namespace std;

int main()
{
    string s1;
    cout << "请输入一个字符串：";
    getline(cin,s1);
    int count1=0,count2=0,count3=0,count4=0;
    int len = s1.length();
    for(int i=0;i<len;i++)
    {
        if((s1[i]>='a'&&s1[i]<='z') || (s1[i]>='A'&&s1[i]<='Z'))
        {
            count1++;
        }
        else if(s1[i]>= '0'&&s1[i]<= '9')
        {
            count2++;
        }
        else if(s1[i] == ' ')
        {
            count3++;
        }
        else
        {
            count4++;
        }
    }
    cout << "字母个数 ：" << count1<<endl;
    cout << "数字个数 ：" << count2<<endl;
    cout << "空格个数 ：" << count3<<endl;
    cout << "其他个数 ：" << count4<<endl;
    return 0;
}