View Compilation Error

0_0_22065376_29074.cpp: In function 'void Change(int, int, int, int)':
0_0_22065376_29074.cpp:20:12: error: expected primary-expression at end of input
         sum%
            ^
0_0_22065376_29074.cpp:20:12: error: expected '}' at end of input
0_0_22065376_29074.cpp:20:12: error: expected '}' at end of input