C++day1

1> 思维导图

2> 试编程

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

#include 
#include 
using namespace std;

int main()
{
    cout << "请输入一个字符串：";
    //定义存储容器
    int capital=0;
    int lowercase = 0;
    int number = 0;
    int blank = 0;
    int other = 0;
    string buf = "";
    getline(cin, buf);
    int len;
    len = buf.size();
    //计算个数
    for(int i=0; i 'A' && buf[i] < 'Z')
        {
            capital++;
        }
        else if(buf[i] > 'a' && buf[i] < 'z')
        {
            lowercase++;
        }
        else if(buf[i] > '0' && buf[i] <'9')
        {
            number++;
        }
        else if(buf[i] == ' ')
        {
            blank++;
        }
        else
        {
            other++;
        }
    }
    cout << "大写字母：" << capital << endl;
    cout << "小写字母：" << lowercase << endl;
    cout << "数字个数：" << number << endl;
    cout << "空格个数：" << blank << endl;
    cout << "其他字符：" << other << endl;
    return 0;
}