阅读程序写结果： #include <iostream> #include <string> using namespace std; int main() { string str; int i; int count; count = 0; getline( cin, str ); for ( i = 0; i < str.length(); i++ ) if ( str[i] >= 'a' && str[i] <= 'z' ) count++; cout << "It has " << count << " lowercases" << endl; return(0); } 输入：NOI2016 will be held in Mian Yang. 输出：_______