View Compilation Error

0_0_35792713_11716.cpp:14:11: error: expected identifier before '(' token
 void union(int x,int y)//合并 
           ^
0_0_35792713_11716.cpp:14:12: error: expected unqualified-id before 'int'
 void union(int x,int y)//合并 
            ^
0_0_35792713_11716.cpp:14:12: error: expected ')' before 'int'
0_0_35792713_11716.cpp: In function 'int main()':
0_0_35792713_11716.cpp:30:4: error: expected primary-expression before 'union'
    union(x,y);
    ^