???? ?? MS Visual C Tutorial

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???? ??MS Visual C Tutorial

• 2005. 5. 8
• MASSLAB ???

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Overview

• Debugging Example (using debugger)
• Set breakpoints
• Start debugger
• Debugger Windows
• Execute the program Step By Step
• A Real Example

Visual Studio C 6.0 is used in the slide.
Currently Visual Studio .Net is available.
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Debugging Example

• Debugging
• The process of finding and removing errors (bugs)
  from a software program
• The most time-consuming and hardest job, when
  developing a large software
• Debugger
• A software tool that is used to detect the source
  of errors, by performing step-by-step execution
  of application code and viewing the content of
  code variables.
• Using printf is not a good way to debug your
  program

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Debugging Example1. Set Breakpoints
press F9 to set a breakpoint on the line When
the execution reaches any of them, it will be
stopped
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Debugging Example1. Set Breakpoints (Advanced)

• Advanced Breakpoints
• Setting Breakpoints When Values Change or Become
  True
• Setting Breakpoints at a Memory Location
• How to use these features
• Edit Breakpoints (AltF9)

For more information, visit http//msdn.microsof
t.com/library/default.asp?url/library/en-us/vccor
e98/HTML/_core_using_breakpoints.3a_.additional_in
formation.asp
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Debugging Example2. Start Debugger

• Go (F5)
• Executes code from the current statement until a
  breakpoint or the end of the program is reached
• Step Into (F11)
• Single-steps through instructions in the program
• Run to Cursor (CtrlF10)
• Executes the program to the cursor

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Debugging Example3. Debugger Windows (Default)
Current execution point
User specified values and expressions
Information about variables
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Debugging Example3. Debugger Windows (Advanced)

• Watch, Variables
• Included in the default window
• Call Stack
• Stack of all functions that have not returned
• Memory
• Current memory contents
• Registers
• Contents of the general purpose and
• CPU status registers
• Disassembly
• Assembly-language code

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Debugging Example4. Execute the Program Step By
Step

• Go (F5)
• Restart (CtrlShiftF5)
• Stop Debugging (ShitF5)
• Step Into (F11)
• Single-step through instructions in the program.
  Enters each function call that is encountered
• Step Over (F10)
• Single-steps through instructions in the program.
  Execute a function call without stepping through
  the function instructions
• Step Out (ShiftF11)
• Run to Cursor (CtrlF10)