<human>:  How to use a debugger correctly?
<bot>: 
1. First, understand the concept of a debugger. A debugger is a tool that helps locate and identify errors in a program.
2. Next, make sure the debugger is properly installed and configured on your system.
3. When you run a debugger, the program starts to execute from the beginning. As it executes, you can set breakpoints, which pause the program when it reaches the breakpoint.
4. When the program pauses, you can use the debugger to inspect the current state of the program, examine variables, and view a call stack of functions that have been called.
5. When you identify the location where the program produces errors, you can use the debugger to step through the program and investigate the causes of the errors.
6. Lastly, use functions such as watchpoint and conditional breakpoint to actively monitor variables that could affect the outcome of your program. This way, you can detect errors before they happen.