View Compilation Error

0_0_4030085_12218.cpp:15: error: expected `,' or `...' before "a"
0_0_4030085_12218.cpp:16: error: ISO C++ forbids declaration of `node' with no type
0_0_4030085_12218.cpp: In function `bool cmp(int)':
0_0_4030085_12218.cpp:17: error: `a' undeclared (first use this function)
0_0_4030085_12218.cpp:17: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_4030085_12218.cpp:17: error: `b' undeclared (first use this function)
0_0_4030085_12218.cpp: In function `int main()':
0_0_4030085_12218.cpp:36: error: no matching function for call to `sort(<anonymous struct>[100000], <anonymous struct>*, bool (&)(int))'