Compilare: main.cpp: In function 'int main()': main.cpp:5:16: warning: unused variable 'st' [-Wunused-variable] int n,a,ma,st,dr,k,i,s,x; ^~ main.cpp:5:19: warning: unused variable 'dr' [-Wunused-variable] int n,a,ma,st,dr,k,i,s,x; ^~ main.cpp:5:28: warning: variable 'x' set but not used [-Wunused-but-set-variable] int n,a,ma,st,dr,k,i,s,x; ^ main.cpp:6:11: warning: unused variable 'fin' [-Wunused-variable] FILE *fin,*fout; ^~~ main.cpp:6:16: warning: unused variable 'fout' [-Wunused-variable] FILE *fin,*fout; ^~~~