Compilare: main.cpp: In function 'int main()': main.cpp:6:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("nrtri.in","r",stdin); ^ main.cpp:7:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("nrtri.out","w",stdout); ^ main.cpp:9:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%d",&n); ^ main.cpp:11:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%d",&v[i]); ^ main.cpp:27:18: warning: 'poz' may be used uninitialized in this function [-Wmaybe-uninitialized] nr=nr+poz-j; ~~^~~~