Compilare: main.cpp: In function 'bool vizuini(int, int)': main.cpp:30:37: warning: left operand of comma operator has no effect [-Wunused-value] for (int l= A.x, i=A.y, j=A.y; l<=x, i>=D.y, j<=B.y; l++, i--, j++) ~^~~ main.cpp:30:43: warning: right operand of comma operator has no effect [-Wunused-value] for (int l= A.x, i=A.y, j=A.y; l<=x, i>=D.y, j<=B.y; l++, i--, j++) ~^~~~~ main.cpp:34:42: warning: left operand of comma operator has no effect [-Wunused-value] for (int l = C.x, i = C.y, j = C.y; l>=x, i>=D.y, j<=B.y; l--, i--, j++) ~^~~ main.cpp:34:48: warning: right operand of comma operator has no effect [-Wunused-value] for (int l = C.x, i = C.y, j = C.y; l>=x, i>=D.y, j<=B.y; l--, i--, j++) ~^~~~~ main.cpp: In function 'int main()': main.cpp:43:15: warning: unused variable 'x' [-Wunused-variable] int n,m,k,x,y; ^ main.cpp:43:17: warning: unused variable 'y' [-Wunused-variable] int n,m,k,x,y; ^