Compilare: user.cpp: In function ‘void ATACA(int, int, int)’: user.cpp:21:10: warning: variable ‘ok’ set but not used [-Wunused-but-set-variable] int i,j,ok,c,q,k,jj; ^ user.cpp:21:13: warning: unused variable ‘c’ [-Wunused-variable] int i,j,ok,c,q,k,jj; ^ user.cpp: In function ‘void RELOAD()’: user.cpp:40:8: warning: unused variable ‘j’ [-Wunused-variable] int i,j,pr[k],x,q; ^ user.cpp:40:16: warning: unused variable ‘x’ [-Wunused-variable] int i,j,pr[k],x,q; ^ user.cpp:40:18: warning: unused variable ‘q’ [-Wunused-variable] int i,j,pr[k],x,q; ^ user.cpp: In function ‘int main()’: user.cpp:49:13: warning: variable ‘s’ set but not used [-Wunused-but-set-variable] int i,j,s,x,q; ^ user.cpp:50:16: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(In); ^ user.cpp:51:17: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(Out); ^ user.cpp:52:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^