Compilare: main.cpp: In function 'int main()': main.cpp:6:32: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("euro2.in","r",stdin); ^ main.cpp:7:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("euro2.out","w",stdout); ^ main.cpp:10:17: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ main.cpp:12:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lf",&v[i]); ^ main.cpp:63:18: warning: 'cm' may be used uninitialized in this function [-Wmaybe-uninitialized] sol[cm]=nr; ~~~~~~~^~~