Why do i get an error when running this

Question

#include <iostream>
using namespace std;

int main(){

int arr[5];
arr = {1, 2, 3, 4, 5};
cout << arr[3];

return 0;
}
// instead of running the below code(i mean the right one) when i run the code on top why do i get an error??

#include <iostream>
using namespace std;

int main(){

int arr[5] = {1, 2, 3, 4, 5};
cout << arr[3];

return 0;
}

Answer 1

@enzo, it is the same with struct, this syntax can be used only during the declaration of a variable

Answer 2

oh sorry my bad there should be a semicolon but even with the semicolon it gives an error @Enzo

Answer 3

Oh yes ! I just didn't know the English name ! It is the same as a static array declaration but the values can be of different types !

Answer 4

It is the same thing, only usable at the definition of a variable
return {1, "plop"};
would work with a return type like that :
struct{int i; char s[50]}

Answer 5

According to google you cant asign arrays like this.
I dont understand it very well myself but you either asign it in the initialization or apparently its possible to do this using a struct but i have never tried it. The other option is to just asign the values one at a time.

Answer 6

what about compound literals? I see lots of people using it but when I try it, it errors.

Answer 7

you didnt put a semi-colon after the arr [5] line

Answer 8

Hum, I do not get what you mean by compound literal (my English isn't all that good) :/

Answer 9

I just found out about it today so im not even sure what it is :p you can google it if you want but dont worry about the question.