Compilare: user.cpp: In function ‘int main()’: user.cpp:32:19: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] cuvAux[j]=NULL; ^ user.cpp:34:21: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] cuvAux[j=0]=NULL; ^ user.cpp:43:22: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] cuvAux[j]=NULL; ^ user.cpp:56:24: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] cuvAux[j=0]=NULL; ^ user.cpp:25:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("mesaje.in","r",stdin); ^ user.cpp:26:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("mesaje.out","w",stdout); ^ user.cpp:28:25: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(c,MAXCAR,stdin); ^