cuvant.cpp: In function `int compara(char*, char*)': cuvant.cpp:11: warning: NULL used in arithmetic cuvant.cpp: In function `int main()': cuvant.cpp:31: warning: assignment to non-pointer type `char' from NULL cuvant.cpp:31: warning: argument to non-pointer type `char' from NULL cuvant.cpp:22: warning: `int x' might be used uninitialized in this function cuvant.cpp:22: warning: `int x2' might be used uninitialized in this function