Compilare: main.cpp: In function 'bool termen()': main.cpp:51:17: warning: array subscript has type 'char' [-Wchar-subscripts] val = var[ch]; ^ main.cpp: In function 'int main()': main.cpp:99:11: warning: array subscript has type 'char' [-Wchar-subscripts] var[ch] = ( 1 - var[ch] ); ^ main.cpp:99:27: warning: array subscript has type 'char' [-Wchar-subscripts] var[ch] = ( 1 - var[ch] ); ^ main.cpp:95:26: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d", &n ); ^