In C language, the combined use of structures and pointers often confuses people. For example, after defining a structure, how can we efficiently operate the member variables in the structure through pointers? When a pointer points to a structure variable, what is the storage method in memory? And how can we use pointers to pass structure data between different functions while ensuring the integrity and accuracy of the data? In addition, when it comes to complex nested structures, the application of pointers becomes more complicated. How can we correctly understand and handle this situation? In actual programming, how can we avoid memory errors and program crashes caused by improper pointer operations?