Variable lifetime plays an important role in how we handle memory in our programs. Here are some simple ideas to keep in mind:

1. Local Variables:

   • These are created inside functions.
   • They only last while the function is running.
   • Once the function is done, local variables disappear, which helps clear up memory.

2. Global Variables:

   • These stick around for the whole time the program is running.
   • If we use too many global variables, they can take up a lot of memory.
   • This might cause problems, like changing values we didn’t mean to.

3. Dynamic Memory:

   • When we use things like arrays or objects, we can run into issues if we forget to free up the memory we used.
   • This is called a memory leak, and it can slow down our program.

By understanding these points, we can make sure our applications work better and use memory wisely!