#include <iostream>using namespace std;int main()
{cout << "输入一个字符串：" << endl;string str;int a = 0,b = 0,c = 0,d = 0,e = 0;getline(cin,str);for(int i = 0;i < (int)str.size();i++){if(str[i] >= 'A' && str[i] <= 'Z' )a+=1;else if(str[i] >= 'a' && str[i] <= 'z' )b+=1;else if(str[i] >= '0' && str[i] <= '9' )c+=1;else if(str[i] == ' ')d+=1;elsee+=1;}cout << "大写字母个数：" << a << endl;cout << "小写字母个数：" << b << endl;cout << "数字个数：" << c << endl;cout << "空格个数：" << d << endl;cout << "其他字符个数：" << e << endl;return 0;
}