Visual C++ Debugging

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Breakpoints

Setting Unconditional Breakpoints

To set an unconditional breakpoint, position the cursor at the point you wish to break execution.

Now click on the breakpoint toggle button ( ) or hit F9.

You should see a big red dot appear to the left of the line you selected.

Execute To The Breakpoint

To execute the program to the breakpoint you just set, click on the go button ( ) or hit F5.

This will cause the program to run until it reaches the next breakpoint.

Set another breakpoint further along in the code. Then repeat this procedure to get to the next breakpoint.

Conditional Breakpoints

Conditional breakpoints only stop/pause program execution if a specified condition is true.

They are commonly used to halt the program during loop execution.

To make a conditional breakpoint, select Breakpoints from the Edit menu (Alt + F9).

Click on one of the breakpoints you created before (bottom of the window) or select the cursor line from the, ( ), popup menu to create a new beakpoint.

Now click the Condition button and type the Boolean expression that you wish to check, as the example shown in the following image:

You can use the Go command to execute the program until your conditional breakpoint is reached (if, indeed, it is).