ubuntu编译运行cpp文件

（用一个C++ Primer Plus里的例子好了）

• 编写C++文件，储存为test1.cpp

//-------------ubuntu上.cpp文件编译与运行
#include <iostream>
int main()
{
  using namespace std;
  const int ArSize = 20;
  char name[ArSize];
  char dessert[ArSize];

  cout << "Enter your name:\n";
  cin.getline(name, ArSize);
  cout << "Enter your favorite dessert:\n";
  cin.getline(dessert, ArSize);
  cout << "I have some delicious " << dessert;
  cout << " for you, " << name << ".\n";

  return 0;
}

• 终端中输入

xxxx@xxxx-xxxxxx-xxxxxxx-xxxxx:~/文档/cppfile$ g++ test1.cpp

  同目录下生成一个a.out文件

xxxx@xxxx-xxxxxx-xxxxxxx-xxxxx:~/文档/cppfile$ ls
a.out  test1.cpp

• 终端中输入

xxxx@xxxx-xxxxxx-xxxxxxx-xxxxx:~/文档/cppfile$ ./a.out
Enter your name:
Rawa
Enter your favorite dessert:
Cake
I have some delicious Cake for you, Rawa.

  编译运行成功

  由于只编译一个源文件，所以默认情况下自动删除了test1.o文件，若新编译另一个cpp代码，生成的a.out会覆盖原有文件
  若同时编译多个源代码文件，则编译器不删除目标代码文件

• 编译多个文件，在终端输入

xxxx@xxxx-xxxxxx-xxxxxxx-xxxxx:~/文档/cppfile$ g++ testH.h test2.cpp
xxxx@xxxx-xxxxxx-xxxxxxx-xxxxx:~/文档/cppfile$ ./a.out
This is your Pokemon! Try to talk to it.
Hello Pikachu!
Pikapika !
Pikachu ! ! !

  编译运行成功