View Compilation Error

0_0_24984902_7381.cpp:5:1: error: 'll' does not name a type
 ll gcd(ll a,ll b);
 ^
0_0_24984902_7381.cpp:6:1: error: expected unqualified-id before '{' token
 {
 ^
0_0_24984902_7381.cpp:12:1: error: 'll' does not name a type
 ll lcm(ll a,ll b)
 ^
0_0_24984902_7381.cpp:17:1: error: 'll' does not name a type
 ll numlen(ll n)
 ^
0_0_24984902_7381.cpp: In function 'int main()':
0_0_24984902_7381.cpp:30:4: error: expected ';' before 'n'
 ll n,son,mother,g,d,i;
    ^
0_0_24984902_7381.cpp:31:13: error: expected ')' before string constant
 while((scanf"%d",&n)!=EOF)
             ^
0_0_24984902_7381.cpp:63:1: error: expected ')' at end of input
 }
 ^
0_0_24984902_7381.cpp:63:1: error: expected statement at end of input
0_0_24984902_7381.cpp:63:1: error: expected '}' at end of input