牛客网带空格字符串如何输入

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#include <iostream> #include <string> using namespace std; #include <stdio.h> #include <memory.h> #define MAXLEN 250 int largelettersize(const char* str) {     int len = strlen(str);     if(len > MAXLEN)         return -1;     int size = 0;     while(*str++ != '\0')     {         if(*str >= 'A' && *str <= 'Z')             size++;     }        return size; } void docin(string &str) {       while(1)     {         cin>>str;         if(cin.get() != '\n')         {            cin>>str;         }         else            break;     }     } int main() {    int i = 0;     for(i =0; i< 2;i++)     {         string str;       docin(str);          cout<<largelettersize(str.c_str())<<endl;      }                          }