如何优化此代码？我可以使用vector for cout？

Question

    string str;

  str = "      General Knowledge Test       ";

   cout << string( 39, ' ' ) << string ( 37 , '-') << "\n";

   cout << string( 39, ' ' ) << "|" << str<< "|\n ";

  cout << string( 38, ' ' ) << string ( 37 , '-') << "\n";

  cout << string( 39, ' ' ) << "|"<< string ( 35 , ' ') << "|"<< "\n";

  cout << string( 39, ' ' ) << "|" << " > Pentru a continua apasa 'k'     |\n ";

  cout << string( 38, ' ' ) << "|" << " > Pentru ajutor apasa 'a'         |\n ";

  cout << string( 38, ' ' ) << "|" << " > Pentru raspunsuri apasa 'r'     |\n ";

  cout << string( 38, ' ' ) << "|" << " > Pentru high score apasa 'h'     |\n ";

  cout << string( 38, ' ' ) << "|" << " > Pentru a iesi apasa 'q'         |\n ";

  cout << string( 38, ' ' ) << "|"<< string ( 35 , ' ') << "|"<< "\n";

  cout << string( 39, ' ' ) << string ( 37 , '-') << "\n\n";

Answer 1

您可以使用原始字符串文字来提高静态输出的可读性和可维护性：

#include <iostream>
#include <string>


int main(){
   std::string str = 
R"(                                       -------------------------------------
                                       |      General Knowledge Test       |
                                       -------------------------------------
                                       |                                   |
                                       | > Pentru a continua apasa 'k'     |
                                       | > Pentru ajutor apasa 'a'         |
                                       | > Pentru raspunsuri apasa 'r'     |
                                       | > Pentru high score apasa 'h'     |
                                       | > Pentru a iesi apasa 'q'         |
                                       |                                   |
                                       -------------------------------------)";
   std::cout << str;
}

查看live demo。

当然你也可以使用std::vector<std::string>（但这不一定是优化）：

#include <iostream>
#include <iomanip>
#include <string>
#include <vector>

int main(){
   std::vector<std::string> strs { 
"-------------------------------------",
"|      General Knowledge Test       |",
"-------------------------------------",
"|                                   |",
"| > Pentru a continua apasa 'k'     |",
"| > Pentru ajutor apasa 'a'         |",
"| > Pentru raspunsuri apasa 'r'     |",
"| > Pentru high score apasa 'h'     |",
"| > Pentru a iesi apasa 'q'         |",
"|                                   |",
"-------------------------------------"
};
   for(auto str : strs) {
       std::cout << std::setw(70) << std::right << str << '\n';
   }
}

这里又是live demo。