View Compilation Error

0_0_35892304_9418.cpp: In function 'int getSize(int)':
0_0_35892304_9418.cpp:51:12: error: 'si' was not declared in this scope
     return si
            ^
0_0_35892304_9418.cpp:51:12: error: expected ';' at end of input
0_0_35892304_9418.cpp:51:12: error: expected '}' at end of input