8.5作业

1.思维导图

2.提示并输入一个字符串，统计该字符中大写、小写字母个数、数字个数、空格个数以及其他字符个数，要求使用C++风格字符串完成

#include <iostream>

using namespace std;

int main()
{
    string str;
    cout << "请输入一个字符串" << endl;
    getline(cin,str);
    int big = 0, small = 0, num = 0, space = 0,other = 0, size = str.size();
    for(int i=0;i<size;i++)
    {
        if(str[i]>='A' && str[i]<='Z')
            big++;
        else if(str[i]>='a' && str[i]<='z')
            small++;
        else if(str[i]>=0 && str[i]<=9)
            num++;
        else if(str[i] == ' ')
            space++;
        else
            other++;
    }
    cout << "大写字母个数：" << big << endl;
    cout << "小写字母个数：" << small << endl;
    cout << "数字个数：" << num << endl;
    cout << "空格个数：" << space << endl;
    cout << "其他字符个数：" << other << endl;
    return 0;
}