View Compilation Error

0_0_30755332_27699.cpp:541:5: error: 'fostr' does not name a type
     fostr
     ^
0_0_30755332_27699.cpp:541:5: error: expected '}' at end of input
0_0_30755332_27699.cpp:528:9: error: expected unqualified-id at end of input
         }
         ^