找出给定字符串中大写字符(即'A'-'Z')的个数

#include<iostream> #include<sstream>using namespace std; int main() { string str; while (getline(cin, str)) { int i=0,num=0; int len=str.size(); for(i=0;i<len i="" if="" str="" i="">='A'&&str[i]<='Z') num++; } cout<<num<<endl; } return 0; } </len></sstream></iostream>