Compilare: user.cpp: In function ‘int main()’: user.cpp:54:13: warning: unused variable ‘maxn’ [-Wunused-variable] int x,y,maxn,b,l; ^ user.cpp:54:18: warning: unused variable ‘b’ [-Wunused-variable] int x,y,maxn,b,l; ^ user.cpp:52:35: 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:53:37: 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:55:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&x,&y); ^