Compilare: user.cpp: In function ‘int main()’: user.cpp:13:20: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘long long unsigned int*’ [-Wformat=] scanf("%d%d",&N,&S); ^ user.cpp:13:20: warning: format ‘%d’ expects argument of type ‘int*’, but argument 3 has type ‘long long int*’ [-Wformat=] user.cpp:15:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=N;i++) ^ user.cpp:19:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=1;j<=N;j++) ^ user.cpp:22:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=1;j<=N;j++) ^ user.cpp:24:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=N;i++) ^ user.cpp:28:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=(N+1)/2;i++) ^ user.cpp:34:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=N;i++) ^ user.cpp:10:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("triunghi.in","r",stdin); ^ user.cpp:11:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("triunghi.out","w",stdout); ^ user.cpp:13:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&N,&S); ^