How to Add an Element to an Array of Structs in C?

In C, a struct is a user-defined data type that allows the users to group related data in a single object. An array of structs allows to store multiple structs in contiguous memory locations. In this article, we will learn how to add an element to an array of structs in C.

Example:

Input: 
structArray[] = { { "Ram", 21 }, { "Rohit", 25 } };
Element to add: new_person = { "Sia", 24 };

Output:
structArray: Name: Ram, Age: 21
 Name: Rohit, Age: 25
 Name: Sia, Age: 24

Add an Element to an Array of Structs in C

One structure can be assigned to the other using the assignment operator. We can add elements to the array of structures by assigning them to the required index.

Approach

• Create a new struct element with the data that you want to insert in the array.
• Create a function to add an element.
• Check if the array of struct is full or not.
• If not full, add the new element into the array of struct at the end of the array.

C Program to Add an Element to an Array of Structs in C

The following program illustrates how we can add an element to an array of structs in C.

Original Array of Struct:
Name: Ram, Age: 21
Name: Rohit, Age: 25

After Addition Array of struct:
Name: Ram, Age: 21
Name: Rohit, Age: 25
Name: Sia, Age: 24

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