View Compilation Error

0_0_19650875_5680.cpp: In function 'int main()':
0_0_19650875_5680.cpp:8:34: error: expected ')' before '!' token
     while ( scanf ( "%d" , & n ) ! = EOF && n ) { 
                                  ^
0_0_19650875_5680.cpp:8:36: error: expected primary-expression before '=' token
     while ( scanf ( "%d" , & n ) ! = EOF && n ) { 
                                    ^