Compilare: user.cpp: In function ‘int main()’: user.cpp:13:19: warning: format ‘%u’ expects argument of type ‘unsigned int*’, but argument 2 has type ‘long unsigned int*’ [-Wformat=] scanf("%u", &n); ^ user.cpp:14:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<=n;i++) ^ user.cpp:16:26: warning: format ‘%u’ expects argument of type ‘unsigned int*’, but argument 2 has type ‘long unsigned int*’ [-Wformat=] scanf("%u", &v[i]); ^ user.cpp:30:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=1;j<=n;j++) ^ user.cpp:39:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(u=1;u<=m[k][0];u++) ^ user.cpp:45:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<=n;i++) ^ user.cpp:46:27: warning: format ‘%u’ expects argument of type ‘unsigned int’, but argument 2 has type ‘long unsigned int’ [-Wformat=] printf("%u ", v[i]); ^ user.cpp:11:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("algsort.in", "r", stdin); ^ user.cpp:12:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("algsort.out", "w", stdout); ^ user.cpp:13:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%u", &n); ^ user.cpp:16:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%u", &v[i]); ^