Compilare: user.cpp: In function ‘int main()’: user.cpp:27:27: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[20]’ [-Wformat=] while(scanf("%s ",&aux)!=EOF) ^ user.cpp:25:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,sol=0,a,b; ^ user.cpp:25:19: warning: unused variable ‘a’ [-Wunused-variable] int i,j,sol=0,a,b; ^ user.cpp:25:21: warning: unused variable ‘b’ [-Wunused-variable] int i,j,sol=0,a,b; ^ user.cpp:26:10: warning: unused variable ‘c’ [-Wunused-variable] char c,c2; ^ user.cpp:26:12: warning: unused variable ‘c2’ [-Wunused-variable] char c,c2; ^