C Memory Management Guide

In C language, memory management is the responsibility of the programmer. Here are some commonly used memory management operations:

1. Dynamic memory allocation:
   You can use the malloc() function to allocate a block of memory of a specified size on the heap. The syntax is as follows:

int *ptr;
ptr = (int *)malloc(sizeof(int));

1. Memory release:
   Use the free() function to release previously allocated memory space, to avoid memory leaks. The syntax is as follows:

free(ptr);

1. Reallocate memory:
   Use the realloc() function to change the size of the previously allocated memory space. The syntax is as follows:

ptr = realloc(ptr, newSize);

1. Memory initialization:
   You can use the memset() function to initialize a block of memory to a specified value. The syntax is as follows:

memset(ptr, 0, sizeof(ptr));

It’s important to ensure proper memory release when using malloc(), free(), and realloc() functions to avoid memory leaks and dangling pointers.