Linux下的调试工具gdb

gcc -g main.c -o main.out                    -g表示生成可调试的文件

l                                                            list表示列出源代码，默认10行。要多显示再按l或者回车

start                                                      开始调试

n                                                           next跳到下一行

p  a                                                       查看a的值

s                                                            进入到函数中

bt                                                           查看函数栈

f 1                                                          切换函数

x/3d 0xffffffffde14                                  从这个地址开始显示三个地址中存放的值，d表示十进制输出

quit                                                       退出debug