size of an array code example

Example 1: size of an array c

int a[20];
int length;
length = sizeof(a) / sizeof(int);

Example 2: array length javascript

var arr = [10,20,30,40,50]; //An Array is defined with 5 instances

var len= arr.length;  //Now arr.length returns 5.Basically, len=5.
console.log(len); //gives 5
console.log(arr.length); //also gives 5

Example 3: javascript size array

let array = [1, 2, 3];
console.log(array.length);

Example 4: get length of array in c

int a[17];
size_t n = sizeof(a)/sizeof(a[0]);