How to use sizeof

Answer 1

sizeof() gives you the size of a data type or variable, in bytes.

cout << sizeof(int) << endl;
int ans = 42;
cout << sizeof(ans) << endl;

Example of use: get the length (= number of elements) of an array:
int arr[10] = {0};
int len = sizeof(arr)/sizeof(arr[0]);

Answer 2

thanks jishnu

Answer 3

Cout<<Sizeof(x);
OR
i=sizeof(x);

where x is a variable or constant

Answer 4

Welcome man