debugger command

You can see from the output in Listing 2 that you open the debugger, set a breakpoint in the calc_diff() function by specifying it by name, and then run the program within the debugger, supplying the same arguments as you would on the command line.

通过清单2中的输出可以看出，我们打开了调试器，通过指定名称在calc diff（）函数中设置了一个断点，然后在调试器中运行程序，提供与命令行相同的参数。

To the bottom are the breakpoints for the debugger, the command output, and so on.

下面是调试用的断点、命令输出等等。

The GNU symbolic debugger, GDB, is a powerful development tool, but one drawback is it works only from the command line.

GNU symbolic debugger（GDB）是一个强大的开发工具，但是不足之处在于它只能在命令行下工作。

The debugger can be enabled with a command line switch (-Xdebug), which will throw you straight into the debuggers command line at startup.

要启用调试器，需要在命令行中加入（-Xdebug）开关，这样一来在启动时就可以直接引导你进入调试器命令行。