View Compilation Error

0_0_18571914_6140.cpp: In function 'int main()':
0_0_18571914_6140.cpp:5:28: error: expected ')' before '!' token
 while(scanf("%d%d\n",&a,&b)!EOF)
                            ^
0_0_18571914_6140.cpp:5:32: error: expected ';' before ')' token
 while(scanf("%d%d\n",&a,&b)!EOF)
                                ^