View Compilation Error

0_0_1985334_27236.cpp:10: error: `main' must return `int'
0_0_1985334_27236.cpp: In function `int main(...)':
0_0_1985334_27236.cpp:39: error: invalid conversion from `int (*)(const int*, const int*)' to `int (*)(const void*, const void*)'
0_0_1985334_27236.cpp:39: error:   initializing argument 4 of `void qsort(void*, size_t, size_t, int (*)(const void*, const void*))'