Compilare: user.cpp: In function ‘void fisier()’: user.cpp:20:15: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] nf[i-poz] = NULL; ^ user.cpp: In function ‘void functie()’: user.cpp:36:8: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] *p = NULL; ^ user.cpp: In function ‘int main()’: user.cpp:60:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%s",s); ^