Compilare: user.cpp: In function ‘int main()’: user.cpp:19:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("struti.in","r",stdin); ^ user.cpp:20:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("struti.out","w",stdout); ^ user.cpp: In function ‘void citesc()’: user.cpp:27:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&n,&m,&t); ^ user.cpp:30:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",mat[i]+j); ^ user.cpp: In function ‘void afis()’: user.cpp:69:56: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(scanf("%d%d",&maxx,&maxy),ce_trebuie=1<<29,nr=0;t;scanf("%d%d",&maxx,&maxy),printf("%d %d\n",ce_trebuie,nr),--t,ce_trebuie=1<<29,nr=0){ ^ user.cpp:69:5: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(scanf("%d%d",&maxx,&maxy),ce_trebuie=1<<29,nr=0;t;scanf("%d%d",&maxx,&maxy),printf("%d %d\n",ce_trebuie,nr),--t,ce_trebuie=1<<29,nr=0){ ^