View Compilation Error

0_0_35857047_20817.cpp: In function 'int main()':
0_0_35857047_20817.cpp:6:7: error: expected unqualified-id before '[' token
 auto& [a, b] = x;
       ^
0_0_35857047_20817.cpp:6:7: error: expected initializer before '[' token
0_0_35857047_20817.cpp:7:8: error: 'a' was not declared in this scope
 cin >> a >> b;
        ^
0_0_35857047_20817.cpp:7:13: error: 'b' was not declared in this scope
 cin >> a >> b;
             ^