工欲善其事，必先利其器。gdb作为一个高效的debug工具，必学之！
GDB操作
- 设置参数调试
gdb prog set args -l a -C abc r // 或者 gdb prog r -l a -C abc - 断点
info b // show information for breakpoint b 10 // set line10 breakpoint delete [n] // delete all breakpoints [or breakpoint n] - 基本调试
c // continue until next breakpoint n // next code s // step into function or code block p // print variable st // start run and stop ad firt code in main watch //watch variable during running time bt // watch info of invoking heap l n // list 10 lines of code at center of line n disp // display variable once stop
后话
Bug是程序猿最不愿见到的，掌握了gdb，就再也不怕bug啦！
