View Compilation Error

0_0_21046656_9566.cpp: In function 'void unions(int, int)':
0_0_21046656_9566.cpp:17:5: error: declaration of 'int x' shadows a parameter
 int x = find(a);
     ^
0_0_21046656_9566.cpp:17:14: error: 'a' was not declared in this scope
 int x = find(a);
              ^
0_0_21046656_9566.cpp:18:5: error: declaration of 'int y' shadows a parameter
 int y = find(b);
     ^
0_0_21046656_9566.cpp:18:14: error: 'b' was not declared in this scope
 int y = find(b);
              ^