Compilare: user.cpp: In function ‘void dreptunghi(int, int)’: user.cpp:32:10: warning: variable ‘c1’ set but not used [-Wunused-but-set-variable] bool c1=false,c2=false,c3=false,c4=false; ^ user.cpp:32:19: warning: variable ‘c2’ set but not used [-Wunused-but-set-variable] bool c1=false,c2=false,c3=false,c4=false; ^ user.cpp:32:28: warning: variable ‘c3’ set but not used [-Wunused-but-set-variable] bool c1=false,c2=false,c3=false,c4=false; ^ user.cpp:32:37: warning: variable ‘c4’ set but not used [-Wunused-but-set-variable] bool c1=false,c2=false,c3=false,c4=false; ^ user.cpp:51:20: warning: ‘val’ may be used uninitialized in this function [-Wmaybe-uninitialized] dif=val-x+1; ^