View Compilation Error

0_0_18715645_9964.cpp: In function 'int main()':
0_0_18715645_9964.cpp:19:15: error: 'vyx' was not declared in this scope
             A=vyx;
               ^
0_0_18715645_9964.cpp:24:18: error: expected ';' before 'rt'
         D=fabs(C)rt(A*A+B*B);
                  ^