#include<iostream>
using namespace std;
int main()
{
    int letter=0,digit=0,space=0,other=0,i;
    char *p,s[37];
    cout<<"input a string:";
    while((s[i]=getchar())!='\n') i++;
    p=&s[0];
    while(*p!='\n')
    {
        if(('A'<=*p)&&(*p<='Z'))
            ++letter;
        else if(('a'<=*p)&&(*p<='z'))
            ++letter;
        else if((*p>='0')&&(*p<='9'))
            ++digit;
        else if(*p==' ')
            ++space;
        else  ++other;
        p++;
    }
    cout<<"letter:"<<letter<<'\t'<<"digit:"<<digit<<'\t'<<"space:"<<space<<'\t'<<"other:"<<other<<endl;
    return 0;
}
此代码，编译时通过，但是在运行时，数完字符串，他就突然中断了。请教大神帮助！

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