View Compilation Error

0_0_13105488_31310.cpp: In function 'void scan_d(long long int&)':
0_0_13105488_31310.cpp:15:28: error: return-statement with a value, in function returning 'void' [-fpermissive]
         if(in==EOF) return false;
                            ^
0_0_13105488_31310.cpp:23:16: error: return-statement with a value, in function returning 'void' [-fpermissive]
         return true;
                ^