View Compilation Error

0_0_7598271_13171.cpp: In function `int main()':
0_0_7598271_13171.cpp:21: error: invalid conversion from `int (*)(const int*, const int*)' to `int (*)(const void*, const void*)'
0_0_7598271_13171.cpp:21: error:   initializing argument 4 of `void qsort(void*, size_t, size_t, int (*)(const void*, const void*))'