C Array
Used to store multiple elements of the same data type under a single identifier.
They can be accessed using an index that starts from 0
Syntax:
data_type array_name[size];
They can be accessed using an index that starts from 0
Syntax:
data_type array_name[size];
- data_type - Declaring the type of data in an array i.e; int, float, char, etc.
- array_name - Declaring the name.
- size - Declaring the number of elements in an array
Example
#include <stdio.h>
int main() {
int numbers[5] = {1, 2, 3, 4, 5};
printf("Element at index 0: %d\n", numbers[0]);
printf("Element at index 2: %d\n", numbers[2]);
return 0;
}
See how the array works
- int numbers[5] declares 5 the size of the array.
- numbers[0] gets the first value in the array.
Modifying an Array
Using the index we can change or modify the values in an array.
Example
#include <stdio.h>
int main() {
int numbers[5] = {1, 2, 3, 4, 5};
numbers[1] = 6;
numbers[2] = numbers[1];
printf(numbers[1]);
printf(numbers[2]);
return 0;
}Using Loops
We can access, modify the array using loops.
Using iterations in for and while loops we can access them through index.
Using iterations in for and while loops we can access them through index.
Example
#include <stdio.h>
int main() {
int numbers[5] = {1, 2, 3, 4, 5};
for (int i = 0; i < 5; i++) {
printf("%d ", numbers[i]);
}
return 0;
}Quick Recap
Topics Covered
C Arrays
Modifying an Array
Using loops in an Array
Practice With Examples in Compilers
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