Should I use sizeof(...) in an C++-application?

Question

Hi!

Should I use the sizeof-operator? My opinion: no
But I'm only a beginner, so I want to know what others think.

Hoping for an answer, S.A.

Answer 1

Sebastian Ahlborn why not?

it's useful like when you have to find the length of the array.(especially in C)

#include <stdio.h>

int main()

{

    int arr[] = { 1, 2, 3, 4, 7, 98, 0, 12, 35, 99, 14 };

    printf("Number of elements:%d ", sizeof(arr) / sizeof(arr[0]));

    return 0;

}