Compilare: main.cpp: In function 'int main()': main.cpp:7:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("mincinosi.in","r",stdin); ^ main.cpp:8:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("mincinosi.out","w",stdout); ^ main.cpp:32:9: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized] if(v[i]==x) ^~