View Compilation Error

0_0_21531997_17248.cpp:5:1: error: expected unqualified-id before 'int'
 int num[25];
 ^
0_0_21531997_17248.cpp: In function 'int main()':
0_0_21531997_17248.cpp:14:23: error: 'num' was not declared in this scope
    if(x > 0 && x < n) num[tot++] = x;
                       ^
0_0_21531997_17248.cpp:24:12: error: 'num' was not declared in this scope
      lcm = num[pos]/__gcd(lcm, num[pos])*lcm;
            ^