Compilare: user.cpp: In function ‘int main()’: user.cpp:56:36: 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:57:38: 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:59:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&d); ^ user.cpp:63:44: 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:70:44: 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:98:18: warning: ‘y’ may be used uninitialized in this function [-Wmaybe-uninitialized] soly[i]=y; ^ user.cpp:97:18: warning: ‘x’ may be used uninitialized in this function [-Wmaybe-uninitialized] solx[i]=x; ^