Compilare: user.cpp: In function ‘int main()’: user.cpp:38:9: warning: unused variable ‘n’ [-Wunused-variable] int n, i, j; ^ user.cpp:38:12: warning: unused variable ‘i’ [-Wunused-variable] int n, i, j; ^ user.cpp:38:15: warning: unused variable ‘j’ [-Wunused-variable] int n, i, j; ^ user.cpp:35:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("tabela.in","r",stdin); ^ user.cpp:36:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("tabela.out","w",stdout); ^ user.cpp:53:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&xx,&yy); ^