Compilare: user.cpp: In function ‘int main()’: user.cpp:109:28: warning: unused variable ‘x’ [-Wunused-variable] int m, n3, v, s, n1=0, x, y, m1, n4; ^ user.cpp:109:31: warning: unused variable ‘y’ [-Wunused-variable] int m, n3, v, s, n1=0, x, y, m1, n4; ^ user.cpp:109:34: warning: variable ‘m1’ set but not used [-Wunused-but-set-variable] int m, n3, v, s, n1=0, x, y, m1, n4; ^ user.cpp:109:38: warning: variable ‘n4’ set but not used [-Wunused-but-set-variable] int m, n3, v, s, n1=0, x, y, m1, n4; ^ user.cpp:111:10: warning: ‘t’ may be used uninitialized in this function [-Wmaybe-uninitialized] char t; ^