Compilare: user.cpp: In function ‘int main()’: user.cpp:24:21: warning: unused variable ‘ans’ [-Wunused-variable] int n,i,k=0,s=0,ans,mini,rt1=1,rt2,left=1,right; ^ user.cpp:24:47: warning: unused variable ‘right’ [-Wunused-variable] int n,i,k=0,s=0,ans,mini,rt1=1,rt2,left=1,right; ^ user.cpp:22:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("minim.in","r",stdin); ^ user.cpp:23:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("minim.out","w",stdout); ^ user.cpp:26:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:28:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&v[i]); ^ user.cpp:63:23: warning: ‘rt2’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(rt1==1 && rt2==n) ^