This segment illustrates a common memory leak scenario in C, where forgetting to free allocated memory leads to wasted resources. It highlights the historical challenge of manual memory management in C and sets the stage for comparing it with other languages. This segment explains Java's garbage collection mechanism, contrasting it with C's manual memory management. It shows how Java automatically reclaims unused memory, preventing leaks but introducing overhead. This segment introduces Rust's ownership system as an alternative to both manual memory management (like in C) and garbage collection (like in Java). It explains the core concept of ownership where stack variables own heap data, automatically freeing memory when they go out of scope.