View Compilation Error

0_0_17519478_11989.cpp: In function 'int main()':
0_0_17519478_11989.cpp:5:8: error: expected '(' before '{' token
   __asm{
        ^
0_0_17519478_11989.cpp:6:4: error: 'mov' was not declared in this scope
    mov eax, a
    ^