Compilare: user.cpp: In function ‘int main()’: user.cpp:31:15: warning: unused variable ‘st’ [-Wunused-variable] int n,i,j,st,dr,mi,lm,mx=0,m=0,mx2=0,x; ^ user.cpp:31:18: warning: unused variable ‘dr’ [-Wunused-variable] int n,i,j,st,dr,mi,lm,mx=0,m=0,mx2=0,x; ^ user.cpp:31:21: warning: unused variable ‘mi’ [-Wunused-variable] int n,i,j,st,dr,mi,lm,mx=0,m=0,mx2=0,x; ^ user.cpp:31:24: warning: unused variable ‘lm’ [-Wunused-variable] int n,i,j,st,dr,mi,lm,mx=0,m=0,mx2=0,x; ^ user.cpp:31:36: warning: unused variable ‘mx2’ [-Wunused-variable] int n,i,j,st,dr,mi,lm,mx=0,m=0,mx2=0,x; ^ user.cpp:31:42: warning: unused variable ‘x’ [-Wunused-variable] int n,i,j,st,dr,mi,lm,mx=0,m=0,mx2=0,x; ^ user.cpp:32:8: warning: unused variable ‘tm’ [-Wunused-variable] da tm; ^ user.cpp:29:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("centru2.in","r",stdin); ^ user.cpp:30:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("centru2.out","w",stdout); ^ user.cpp:33:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:36:40: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&ve[i].x,&ve[i].y); ^