Compilare: user.cpp: In function ‘int main()’: user.cpp:94:67: warning: value computed is not used [-Wunused-value] for(int j = min(T.col, S1.col), i = min(T.lin, S1.lin); j <= max(T.lin, S1.col), i <= max(T.lin, S1.lin); j++, i += L1 / l1){ ^ user.cpp:100:67: warning: value computed is not used [-Wunused-value] for(int j = min(T.col, S1.col), i = min(T.lin, S1.lin); j <= max(T.lin, S1.col), i <= max(T.lin, S1.lin); i++, j += l1 / L1){ ^ user.cpp:106:67: warning: value computed is not used [-Wunused-value] for(int j = min(T.col, S2.col), i = min(T.lin, S2.lin); j <= max(T.lin, S2.col), i <= max(T.lin, S2.lin); j++, i += L2 / l2){ ^ user.cpp:112:66: warning: value computed is not used [-Wunused-value] for(int j = min(T.col, S2.col), i = min(T.lin, S2.lin); j<= max(T.lin, S2.col), i <= max(T.lin, S2.lin); i++, j += l2 / L2){ ^