View Compilation Error

0_0_29976401_14525.cpp:35:1: error: '_int128' does not name a type
 _int128 _a,_b,_c;
 ^
0_0_29976401_14525.cpp: In function 'long long int mod_turn(long long int, long long int, long long int)':
0_0_29976401_14525.cpp:38:5: error: '_a' was not declared in this scope
     _a=a;
     ^
0_0_29976401_14525.cpp:39:5: error: '_b' was not declared in this scope
     _b=b;
     ^
0_0_29976401_14525.cpp:40:5: error: '_c' was not declared in this scope
     _c=c;
     ^
0_0_29976401_14525.cpp:42:1: error: expected ';' before '}' token
 }
 ^
0_0_29976401_14525.cpp: In function 'int main()':
0_0_29976401_14525.cpp:59:42: error: too few arguments to function 'long long int mod_turn(long long int, long long int, long long int)'
     ans = mod_turn(ans ,mod_inverse(q, p)),p);
                                          ^
0_0_29976401_14525.cpp:36:4: note: declared here
 ll mod_turn(ll a,ll b,ll c)
    ^