• One-Dimensional array
• Two-Dimensional array
• Multi-Dimensional array

Array Definition in C

The following is the syntax for array definition in C

Syntax:

type arrayName[size];

The type can be any C data type. The arrayName is the name of the array. The size must be an integer constant greater than zero.

int numbers[10];

Array Initialization in C

Arrays can be initialized in two ways. Firstly, the arrays are initialized while declaring it.

Example:

int number[5] = {10, 20, 30, 40, 50};

int newArray[5];

    //Initializing the array newArray
    for (int i=0; i<sizeof(newArray); i++)
    {
        newArray[i] = i+1;
    }

#include<stdio.h>

int main()
{
    int newArray[5];

    //Initializing the array newArray
    for (int i=0; i<sizeof(newArray); i++)
    {
        newArray[i] = i+1;
    }

    printf("The third element is %d\n", newArray[2]);
}

The third element is 3