Compilare: user.cpp: In function ‘int main()’: user.cpp:11:28: warning: unused variable ‘pr’ [-Wunused-variable] int n,i,lmax=0,l=1,aux,pr,c,j,nr=1,nrmax=0,pl; ^ user.cpp:11:33: warning: unused variable ‘j’ [-Wunused-variable] int n,i,lmax=0,l=1,aux,pr,c,j,nr=1,nrmax=0,pl; ^ user.cpp:9:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pluton.in","r",stdin); ^ user.cpp:10:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pluton.out","w",stdout); ^ user.cpp:12:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:15:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&v[i]); ^ user.cpp:11:48: warning: ‘pl’ may be used uninitialized in this function [-Wmaybe-uninitialized] int n,i,lmax=0,l=1,aux,pr,c,j,nr=1,nrmax=0,pl; ^