为什么运行出错,我不理解

#includeusing namespace std;int main(){ char text[50]; int upper=0,lower=0,digital=0,space=0,other=0,i; cin.getline(text,50)for(i=0;text[i]!='\0';i++){ if(text[i]>='A'&&text[i]=<'Z')upper++; else if(text[i]>='a'&&text[i]<='z')lower++; else if(text[i]>='0'&&text[i]<='9')digital++; else if(text[i]==' ')space++; else other++; } cout<<"大写字母有"<<upper<<endl; cout<<"小写字母有"<<lower<<endl; cout<<"数字有"<<digital<<endl; cout<<"空格有"<<space<<endl; cout<<"其他有"<<other<<endl; }

cin.getline(text, 50)之后少了分号
if (text[i] >= 'A' && text[i] =< 'Z') 是<= 不是=<

你题目的解答代码如下:


#include <iostream>
using namespace std;

int main()
{
    char text[50];
    int upper = 0, lower = 0, digital = 0, space = 0, other = 0, i;
    cin.getline(text, 50);//之后少了分号
    for (i = 0; text[i] != '\0'; i++)
    {
        if (text[i] >= 'A' && text[i] <= 'Z') //是<= 不是=<
            upper++;
        else if (text[i] >= 'a' && text[i] <= 'z')
            lower++;
        else if (text[i] >= '0' && text[i] <= '9')
            digital++;
        else if (text[i] == ' ')
            space++;
        else
            other++;
    }
    cout << "大写字母有" << upper << endl;
    cout << "小写字母有" << lower << endl;
    cout << "数字有" << digital << endl;
    cout << "空格有" << space << endl;
    cout << "其他有" << other << endl;
}

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