Compilare: user.cpp: In function ‘bool isDigit(char)’: user.cpp:30:28: warning: array subscript has type ‘char’ [-Wchar-subscripts] return isSpecialValue[c] == 1; ^ user.cpp: In function ‘bool isLower(char)’: user.cpp:35:28: warning: array subscript has type ‘char’ [-Wchar-subscripts] return isSpecialValue[c] == 2; ^ user.cpp: In function ‘bool isUpper(char)’: user.cpp:40:28: warning: array subscript has type ‘char’ [-Wchar-subscripts] return isSpecialValue[c] == 3; ^ user.cpp: In function ‘int apelat(char*)’: user.cpp:115:41: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(!isSpecialValue[f[poz]] && f[poz] != ')') ^ user.cpp:122:41: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(!isSpecialValue[f[poz]] && f[poz] != ')') ^ user.cpp: In function ‘int main()’: user.cpp:68:32: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(apel, MAX_LINE+1, in); ^ user.cpp:69:28: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(c,MAX_LINE+1, in); ^ user.cpp:81:32: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(c,MAX_LINE+1, in); ^ user.cpp:92:31: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(c,MAX_LINE+1,in); ^