int rightdown;
rightdown = ((660<<16)|(480&65535));
printf("%s\n",rightdown);

Line 2: warning: data definition has no type or storage class
Line 3: error: expected declaration specifiers or '...' before string constant
Line 3: error: expected declaration specifiers or '...' before 'rightdown'
Line 3: warning: data definition has no type or storage class
Line 3: error: conflicting types for 'printf'
t.c:4: note: a parameter list with an ellipsis can't match an empty parameter name list declaration