9.24C++

思维导图

输入符号，求大小写字母，数字，空格和其他符号的个数

#include <iostream>

using namespace std;

int main()
{
    int a=0,b=0,c=0,d=0,e=0;
    string str;
    cout << "请输入一个字符串:";
    getline(cin,str);
    int count = str.size();
    for(int i=0;i<count;i++)
    {
        if(str[i]<='z' && str[i]>='a')
        {
            a++;
        }
        else if(str[i]<='Z' && str[i]>='A')
        {
            b++;
        }
        else if(str[i]<='9' && str[i]>='0')
        {
            c++;
        }
        else if(str[i] == ' ')
        {
            d++;
        }
        else
        {
            e++;
        }
    }
    cout << "大写字母个数:" << b <<endl;
    cout << "小写字母个数:" << a <<endl;
    cout << "数字个数:" << c <<endl;
    cout << "空格个数:" << d <<endl;
    cout << "其他符号个数:" << e <<endl;
    return 0;
}