Compilare: main.cpp: In function 'int main()': main.cpp:8:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("studenti.in","r",stdin); ^ main.cpp:9:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("studenti.out","w",stdout); ^ main.cpp:10:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ main.cpp:13:35: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&h[i],&g[i]); ^ main.cpp:42:11: warning: 'hp' may be used uninitialized in this function [-Wmaybe-uninitialized] g1=g[hp]; ~~^~~~~~ main.cpp:43:11: warning: 'gp' may be used uninitialized in this function [-Wmaybe-uninitialized] h2=h[gp]; ~~^~~~~~