Compilare: user.cpp: In function ‘double divide(int, int)’: user.cpp:24:9: warning: variable ‘p1’ set but not used [-Wunused-but-set-variable] int p1,p2,poz,i,j; ^ user.cpp:24:12: warning: variable ‘p2’ set but not used [-Wunused-but-set-variable] int p1,p2,poz,i,j; ^ user.cpp: In function ‘int main()’: user.cpp:62:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cmap.in","r",stdin); ^ user.cpp:63:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cmap.out","w",stdout); ^ user.cpp:64:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:65:52: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(i=1;i<=n;++i) scanf("%d%d",&v[i].x,&v[i].y); ^