View Compilation Error

0_0_5243865_1325.cpp: In function `void cmp(const void*, const void*)':
0_0_5243865_1325.cpp:8: error: return-statement with a value, in function returning 'void'
0_0_5243865_1325.cpp: In function `int main()':
0_0_5243865_1325.cpp:18: error: invalid conversion from `void (*)(const void*, const void*)' to `int (*)(const void*, const void*)'
0_0_5243865_1325.cpp:18: error:   initializing argument 4 of `void qsort(void*, size_t, size_t, int (*)(const void*, const void*))'