View Compilation Error

0_0_10803327_20469.cpp: In function `int main()':
0_0_10803327_20469.cpp:38: error: invalid conversion from `Node*' to `size_t'
0_0_10803327_20469.cpp:38: error: invalid conversion from `int (*)(Node, Node)' to `size_t'
GCC/bin/../lib/gcc/mingw32/3.4.2/../../../../include/stdlib.h:361: error: too few arguments to function `void qsort(void*, size_t, size_t, int (*)(const void*, const void*))'
0_0_10803327_20469.cpp:38: error: at this point in file