ecuatii.cpp: In function `int main()': ecuatii.cpp:18: warning: passing NULL used for non-pointer argument passing 2 of `void* memset(void*, int, unsigned int)' ecuatii.cpp:18: warning: argument to non-pointer type `int' from NULL ecuatii.cpp:19: warning: passing NULL used for non-pointer argument passing 2 of `void* memset(void*, int, unsigned int)' ecuatii.cpp:19: warning: argument to non-pointer type `int' from NULL ecuatii.cpp:20: warning: passing NULL used for non-pointer argument passing 2 of `void* memset(void*, int, unsigned int)' ecuatii.cpp:20: warning: argument to non-pointer type `int' from NULL ecuatii.cpp:21: warning: passing NULL used for non-pointer argument passing 2 of `void* memset(void*, int, unsigned int)' ecuatii.cpp:21: warning: argument to non-pointer type `int' from NULL ecuatii.cpp:29: warning: comparison between signed and unsigned integer expressions ecuatii.cpp:33: warning: comparison between signed and unsigned integer expressions