View Compilation Error

0_0_16147803_16246.cpp: In function 'int main()':
0_0_16147803_16246.cpp:39:26: error: 'rui' was not declared in this scope
     if(mouth==2&&rui(year)==1)
                          ^
0_0_16147803_16246.cpp:42:26: error: 'rui' was not declared in this scope
     if(mouth==2&&rui(year)==0)
                          ^