Simple debugging steps for the GDB mode tool

Program Compile :

　　gcc xx.c-o xx-g //Must be plus-g

Start Mode :

　　gdb xx //Enter the modal interface

　　l: Show file, default 10 lines main function

L + Function name//display functions

　　b: Insert Breakpoint

B + line number (main function)

B + file name: line number

B + Function name

　　R: Run the program

　　N: Single-step operation without entering custom functions

　s: Step into the Custom function

　　C: Continue execution to the next breakpoint, no breakpoint execution to end of program

　P: View variables

p + I//view variable I

p + expression//view the value of an expression

Simple debugging steps for the GDB mode tool