Compilare: user.cpp: In function ‘int main()’: user.cpp:45:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("stalpi3.in","r",stdin); ^ user.cpp:46:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("stalpi3.out","w",stdout); ^ user.cpp:48:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&d); ^ user.cpp:52:44: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&s1[i].dis,&s1[i].cul); ^ user.cpp:59:44: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&s2[i].dis,&s2[i].cul); ^ user.cpp: In function ‘double bs(int, int)’: user.cpp:22:9: warning: ‘last’ may be used uninitialized in this function [-Wmaybe-uninitialized] int last,med,st=lc[2][cul-1]+1,dr=lc[2][cul]; ^ user.cpp: In function ‘int main()’: user.cpp:87:18: warning: ‘y’ may be used uninitialized in this function [-Wmaybe-uninitialized] soly[i]=y; ^ user.cpp:86:18: warning: ‘x’ may be used uninitialized in this function [-Wmaybe-uninitialized] solx[i]=x; ^