Compilare: user.cpp: In function ‘int main()’: user.cpp:8:16: warning: unused variable ‘sf’ [-Wunused-variable] int n,i,j,in=0,sf=0,x,pp,min=5002,k; ^ user.cpp:8:21: warning: unused variable ‘x’ [-Wunused-variable] int n,i,j,in=0,sf=0,x,pp,min=5002,k; ^ user.cpp:6:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] {freopen ("secv.in","r",stdin); ^ user.cpp:7:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("secv.out","w",stdout); ^ user.cpp:9:15: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:11:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] {scanf("%d",&v[i]); ^