#include string s //少;int main (){
string s("Expressions in c++ are composed……");string::iterator it=s.begin();while (it !=s.end();&&!isspace(*it)) //s.end();后面多了;{it=toupper(*it);++it;}std::cout<string s!!!!!!!!!!!!!!!!!!!! 此处却了';' 符号int main (){
string s("Expressions in c++ are composed……");string::iterator it=s.begin();while (it !=s....
