The difference between new() and malloc() lies in their behavior and usage. The new() operator, primarily used in languages like C++, allocates memory and invokes the constructor of the object being created.
In contrast, malloc() is a function in the C standard library that solely allocates memory without any constructor invocation. Additionally, new() returns the exact data type, while malloc() returns a void pointer that requires explicit type-casting. The choice between new() and malloc() depends on the programming language and the need for constructor invocation and type safety in memory allocation.