View Compilation Error

0_0_21431817_9053.cpp: In function 'int main()':
0_0_21431817_9053.cpp:7:7: error: expected unqualified-id before 'xor' token
   int xor = 0;
       ^
0_0_21431817_9053.cpp:10:4: error: expected primary-expression before 'xor' token
    xor ^= num[i];
    ^
0_0_21431817_9053.cpp:10:8: error: expected primary-expression before '^=' token
    xor ^= num[i];
        ^
0_0_21431817_9053.cpp:14:10: error: expected primary-expression before 'xor' token
   while (xor) {
          ^
0_0_21431817_9053.cpp:14:13: error: expected primary-expression before ')' token
   while (xor) {
             ^
0_0_21431817_9053.cpp:15:4: error: expected primary-expression before 'xor' token
    xor >>= 1;
    ^
0_0_21431817_9053.cpp:15:8: error: expected primary-expression before '>>=' token
    xor >>= 1;
        ^