Compilare: main.cpp: In member function 'InParser& InParser::operator>>(char*)': main.cpp:38:27: warning: suggest parentheses around assignment used as truth value [-Wparentheses] while(c = read_ch()) { ^ main.cpp: In function 'bool eval_expr()': main.cpp:213:22: warning: array subscript has type 'char' [-Wchar-subscripts] Op[nrop++] = '('; ^ main.cpp:217:22: warning: array subscript has type 'char' [-Wchar-subscripts] Op[nrop++] = '*'; ^ main.cpp:229:22: warning: array subscript has type 'char' [-Wchar-subscripts] Op[nrop++] = '+'; ^ main.cpp:233:22: warning: array subscript has type 'char' [-Wchar-subscripts] Op[nrop++] = '('; ^ main.cpp: In function 'bool contains(int)': main.cpp:272:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(int i = 1; i <= n; ++i) ^~~ main.cpp:274:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' return calcul[repr]; ^~~~~~ main.cpp: In member function 'char InParser::read_ch()': main.cpp:20:38: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, 4096, fin); ^