Find the error in C++ program

This C++ program is not compiling. What do you think is the error with the program?

#include<iostream>
using namespace std;
int main()
{
   int arr[10];
   arr={1,2,3,4,5,6,7,8};
   cout<<"arr[0]="<<arr[0];
   return 0;
}

Is the error due to

Not using printf
Initialising the array with only 8 elements instead of 10
Initialising array in the next statement instead of in definition.
None of the above

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By the way the correct answer is (3)

Comments

Ten questions in C/C++

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Abstract class

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