GeeksforGeeks
geeksforgeeks.org › c language › c-arrays
Arrays in C - GeeksforGeeks
An array is a linear data structure that stores a fixed-size sequence of elements of the same data type in contiguous memory locations.
Published October 17, 2025
ways to arrange a sequence of records in memory
Wikipedia
en.wikipedia.org › wiki › AoS_and_SoA
AoS and SoA - Wikipedia
November 3, 2025 - Structure of arrays (SoA) is a layout separating elements of a record (or 'struct' in the C programming language) into one parallel array per field.
How do you make an array of structs in C? - Stack Overflow
To repeat, this is a rather simple ... too many array elements and large struct members and if you, as you stated, are not interested in a more dynamic approach. This approach can also be useful if the struct members are initialized with named enum-variables (and not just numbers like the example above) whereby it gives the code-reader a better overview of the purpose and function of a structure and its members ... More on stackoverflow.com
Can someone explain how does array of structures work?
You can do it a couple of different ways. You could pre-allocate an array of pointers and allocate each element. Or you can use the handy calloc() function. Or finally you can do as you said just multiply the size of the allocation by the number of elements. You can use the array subscript on the pointer current[i] and the compiler will do the arithmetic for you. calloc() is probably the best since it makes it explicit that you are allocating an array of items, it also will zero the memory for you. More on reddit.com
21
8
January 15, 2023structure contining an array of structures - how to initialise?
try this fredType freds[] = { { .Name = "bill", .harrys = { {"blah",3}, {"bleg",10}, } }, { .Name = "george", .harrys = { {"yuck",4}, {"meh",7}, } }, } Edit : This stackoverflow post explains the concept of designated initializers better. https://stackoverflow.com/questions/47202557/what-is-a-designated-initializer-in-c More on reddit.com
7
1
March 9, 2023Why isn't -> used in struct arrays?
Well, if you have an array of MovieData then you have to do: array[i].title But if you have an array of POINTERS to MovieData then feel free to use: array[i]->title More on reddit.com
19
9
February 17, 2022What is an array of structure in C?
An array of structures in C is a collection of structure variables stored in an array. It allows you to store multiple records, such as student or employee details, using a single structure type.
wscubetech.com
wscubetech.com › resources › c-programming › array-of-structure
Array of Structures in C Programming (With Examples)
Can structure arrays be global in C?
Yes, you can declare them globally for use across multiple functions.
wscubetech.com
wscubetech.com › resources › c-programming › array-of-structure
Array of Structures in C Programming (With Examples)
Why do we use array of structure in C programming?
It helps store and process a group of similar data records (like multiple students, employees, etc.) in a structured way.
wscubetech.com
wscubetech.com › resources › c-programming › array-of-structure
Array of Structures in C Programming (With Examples)
Videos
06:41
Arrays of structs are easy! 🗄️ - YouTube
05:07
"Complete Guide to Using Array of Structure in C Programming for ...
04:12
C array of structs 🏫 - YouTube
Array of Structures in C | How to Use Array of Structures in C
14:24
Arrays of Structures -- C++ Structs Tutorial #4 - YouTube
03:22
Declaring an Array of Structure - YouTube
Reddit
reddit.com › r/c_programming › can someone explain how does array of structures work?
r/C_Programming on Reddit: Can someone explain how does array of structures work?
January 15, 2023 -
Good day,
So I created a structure Position with two int members.
struct Position {
int x;
int y;
};
typedef struct Position Position;
int main() {
Position *current = (Position*)malloc(sizeof(Position));
...
}If I want to create an array of it, should I just multiply it to how many elements I want to use?Does pointer arithmetic will move me to the next element struct every time I add 1 to the pointer?Why when I try to reallocate it by multiplying to higher number, it returns invalid pointer even though I just passed the pointer coming from malloc(). Thanks for answering and have a nice day.
Top answer 1 of 6
11
You can do it a couple of different ways. You could pre-allocate an array of pointers and allocate each element. Or you can use the handy calloc() function. Or finally you can do as you said just multiply the size of the allocation by the number of elements. You can use the array subscript on the pointer current[i] and the compiler will do the arithmetic for you. calloc() is probably the best since it makes it explicit that you are allocating an array of items, it also will zero the memory for you.
2 of 6
4
Why when I try to reallocate it by multiplying to higher number, it returns invalid pointer even though I just passed the pointer coming from malloc(). How did you try to reallocate it, and how do you know the returned pointer is invalid? One would do something like Position *temp = realloc(current, n * sizeof *temp); and then check if (temp), but unless n is very large, realloc should typically not fail and return a pointer that is not NULL.
GeeksforGeeks
geeksforgeeks.org › c language › c-array-of-structure
Array of Structures in C - GeeksforGeeks
An array of 2 Person structures is declared, and each element is populated with different people’s details. A for loop is used to iterate through the array and print each person's information. Once you have already defined structure, the array of structure can be defined in a similar way as any other variable.
Published October 21, 2025
TutorialsPoint
tutorialspoint.com › cprogramming › c_arrays_of_structures.htm
Array of Structures in C
Since we have an array of three elements, of struct whose size is 32 bytes, the array occupies "32 x 3" bytes. Each block of 32 bytes will accommodate a "title", "price" and "pages" element. You can also declare an empty struct array. Afterwards, you can either read the data in it with scanf() statements or assign value to each element as shown below −
WsCube Tech
wscubetech.com › resources › c-programming › array-of-structure
Array of Structures in C Programming (With Examples)
3 weeks ago - Learn in this tutorial about Array of Structures in C with examples. Understand how to initialize, access, and modify structures to manage data effectively in C.
W3Schools
w3schools.com › c › c_arrays.php
C Arrays
To insert values to it, use a comma-separated list inside curly braces, and make sure all values are of the same data type: ... We have now created a variable that holds an array of four integers.
Scaler
scaler.com › home › topics › array of structure in c
Array of Structure in C - Scaler Topics
April 3, 2024 - An array can be defined as a data structure where we can group the variables of the same data types. Each element of the array can be char, int, double, float or even a structure.
TutorialsPoint
tutorialspoint.com › explain-the-array-of-structures-in-c-language
Explain the array of structures in C language
December 6, 2024 - Since we have an array of three elements, of struct whose size is 32 bytes, the array occupies "32 x 3" bytes. Each block of 32 bytes will accommodate a "title", "price" and "pages" element. You can also declare an empty struct array. Afterwards, you can either read the data in it with scanf() statements or assign value to each element as shown below −
Sdds
intro2c.sdds.ca › pointers, arrays and structs
Pointers, Arrays and Structs | Introduction to C
The name of an array holds the address of the start of the array; that is, the name of the array is a pointer. Since arrays by definition store element data contiguously in memory, we can access any array element using pointer syntax. This chapter examines this relationship between pointers, arrays and structures in more detail.
Medium
medium.com › @Dev_Frank › arrays-in-c-4f7dd9f1ed27
ARRAYS IN C. Array is a kind of data structure… | by Dev Frank | Medium
January 29, 2024 - ARRAYS IN C ARRAYS are collections of homogenous data items which are stored in contiguous memory locations. The elements are accessed by their index or position in the array. It is a data structure …
Unstop
unstop.com › home › blog › array of structures in c language explained with examples
Array Of Structures In C Language Explained With Examples
July 19, 2024 - An array of structures in C is an array (collection of elements) where each element is a structure. It allows us to efficiently store and access complex data.
Study.com
study.com › computer science courses › computer science 111: programming in c
Arrays of Structures in C Programming - Lesson | Study.com
December 12, 2018 - To unlock this lesson you must ... of structures in c programming. An array of structures, which are composite data types with collections of variables, works almost the same way as declaring fundamental arrays....
Top answer 1 of 10
149
Use:
#include<stdio.h>
#define n 3
struct body
{
double p[3]; // Position
double v[3]; // Velocity
double a[3]; // Acceleration
double radius;
double mass;
};
struct body bodies[n];
int main()
{
int a, b;
for(a = 0; a < n; a++)
{
for(b = 0; b < 3; b++)
{
bodies[a].p[b] = 0;
bodies[a].v[b] = 0;
bodies[a].a[b] = 0;
}
bodies[a].mass = 0;
bodies[a].radius = 1.0;
}
return 0;
}
This works fine. Your question was not very clear by the way, so match the layout of your source code with the above.
2 of 10
28
Another way of initializing an array of structs is to initialize the array members explicitly. This approach is useful and simple if there aren't too many struct and array members.
Use the typedef specifier to avoid re-using the struct statement everytime you declare a struct variable:
typedef struct
{
double p[3];//position
double v[3];//velocity
double a[3];//acceleration
double radius;
double mass;
}Body;
Then declare your array of structs. Initialization of each element goes along with the declaration:
Body bodies[n] = {{{0,0,0}, {0,0,0}, {0,0,0}, 0, 1.0},
{{0,0,0}, {0,0,0}, {0,0,0}, 0, 1.0},
{{0,0,0}, {0,0,0}, {0,0,0}, 0, 1.0}};
To repeat, this is a rather simple and straightforward solution if you don't have too many array elements and large struct members and if you, as you stated, are not interested in a more dynamic approach. This approach can also be useful if the struct members are initialized with named enum-variables (and not just numbers like the example above) whereby it gives the code-reader a better overview of the purpose and function of a structure and its members in certain applications.
Upgrad
upgrad.com › home › tutorials › software & tech › array of structure in c
Array of Structure in C Explained with Example
January 4, 2026 - The array s can hold details for three different students. Each element in the array represents one student and holds its own set of member variables. You can also declare structure variables in two ways:
BYJUS
byjus.com › gate › difference-between-structure-and-array-in-c
Difference Between Structure and Array in C
March 31, 2023 - One can use a structure for grouping items of possibly varied types into a single one. Array in C – It is a collection of varied items that get stored at contiguous memory locations.
Testbook
testbook.com › home › key differences › difference between structure and array in c | testbook.com
Difference Between Structure and Array in C | Testbook.com
The primary difference between Structures and Arrays is that Arrays can only hold elements of the same data type, while Structures can hold elements of different data types. Arrays also require a defined size at the point of declaration, which ...
Naukri
naukri.com › code360 › library › array-of-structures-in-c
Array of Structures in C - Naukri Code 360
Almost there... just a few more seconds
DataFlair
data-flair.training › blogs › array-of-structures-in-c
Array of Structures in C Programming - DataFlair
March 9, 2024 - Structures help organize related data together. We can create an array of structured data types. An array of structures in C allows for representing multiple instances of a structure as an array.
OverIQ
overiq.com › c-programming-101 › array-of-structures-in-c › index.html
Array of Structures in C - C Programming Tutorial - OverIQ.com
Declaring an array of structure is same as declaring an array of fundamental types. Since an array is a collection of elements of the same type. In an array of structures, each element of an array is of the structure type.