View Compilation Error

0_0_15204539_23120.cpp: In function 'int main()':
0_0_15204539_23120.cpp:10:38: error: expected ')' before '!' token
         while ( scanf ( "%d" , & n ) ! = EOF && n ) {
                                      ^
0_0_15204539_23120.cpp:10:40: error: expected primary-expression before '=' token
         while ( scanf ( "%d" , & n ) ! = EOF && n ) {
                                        ^