How to Modify Struct Members Using a Pointer in C?

In C++, we use structure to group multiple different types of variables inside a single type. These different variables are called the members of structures. In this article, we will discuss how to modify the struct member using a pointer in C.

Example

Input:
myStruct.mem1 = 10;
myStruct.mem2 = 'a';

Output:
myStruct.mem1 = 28;
myStruct.mem2 = 'z';

Modify Struct Members Using Pointer

We can declare a pointer variable that points to the instance of a structure. To modify the value of this structure member using the pointer, we can dereference the structure pointer and use either the dot operator (.) or the arrow operator(->) as shown:

myStructPtr->mem1 = 28;
or
(*myStructPtr).mem1 = 28;

C++ Program to Modify Struct Members Using a Pointer

Original Structure: (10, a)
Modified Structure: (28, z)

Time Complexity: O(1)
Space Complexity: O(1)