Accesing array beyond it's size doesn't gives any error in c++ how?

Question

i was declare a array size of 5. even i print 10 element in array it gives some random values not error message. this behavior same for all languages or c++ only. https://code.sololearn.com/c8uH1lyTLI7U/#cpp

Answer 1

C++ isn't safe with native arrays.
Use std::array instead, with the '.at' method (it will throw an error) :
std::array<int, 5> arr;
std::cout << arr.at(10);

Answer 2

AZHAGESAN S You will get garbage value. I think it is only in C. Java will give exception.

Answer 3

AJ Anant #G3 thanks sir

Théophile shows an error like array is not a member of std. Give me any working example. I'm new to c++

Answer 4

Thank you Théophile

Answer 5

Théophile now it gives out of range error that's fine. But this method doesn't give uninitialized error when using like arr [2]. Previous example gives uninitialized error. Is that possible to check both errors?

Answer 6

AZHAGESAN S you need to include the std header file:
#include <array>
At the beginning of the program.

Answer 7

It doesn't seem to be an error not to initialize an array in c++. If you want to initialize it with zero-values, you can do :
std::array<int, 5> arr{};

It is explained in this Stack Overflow link : https://stackoverflow.com/questions/18295302/default-initialization-of-stdarray