Compilare: user.cpp:14:37: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] char sir[MAX_LENGTH] = { NULL, NULL }; ^ user.cpp:14:37: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] user.cpp: In function ‘void Read()’: user.cpp:37:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%s", &sir[1]); ^ user.cpp:38:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &n); ^ user.cpp: In function ‘int Lung(int, int, int)’: user.cpp:130:33: warning: ‘s2’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(mnm > s1 + s2) ^