View Compilation Error

1_736_994_15847.cpp: In function 'void ok(int)':
1_736_994_15847.cpp:40:21: error: 'sum2' was not declared in this scope
     if(sum1==num/2||sum2==num/2)
                     ^
1_736_994_15847.cpp:41:1: error: expected primary-expression before '}' token
 }
 ^