dir.cpp: In function `int main()': dir.cpp:33: warning: passing NULL used for non-pointer argument passing 2 of ` void* memset(void*, int, unsigned int)' dir.cpp:33: warning: argument to non-pointer type `int' from NULL dir.cpp:44: warning: passing NULL used for non-pointer argument passing 2 of ` void* memset(void*, int, unsigned int)' dir.cpp:44: warning: argument to non-pointer type `int' from NULL dir.cpp:49: warning: passing NULL used for non-pointer argument passing 2 of ` void* memset(void*, int, unsigned int)' dir.cpp:49: warning: argument to non-pointer type `int' from NULL dir.cpp:60: warning: passing NULL used for non-pointer argument passing 2 of ` void* memset(void*, int, unsigned int)' dir.cpp:60: warning: argument to non-pointer type `int' from NULL dir.cpp:70: warning: passing NULL used for non-pointer argument passing 2 of ` void* memset(void*, int, unsigned int)' dir.cpp:70: warning: argument to non-pointer type `int' from NULL /tmp/cc3dQleH.o(.text+0x6a): In function `main': : the `gets' function is dangerous and should not be used.