Compilare: user.cpp: In function ‘int main()’: user.cpp:57:23: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] s[(poz-p[poz])/2]=NULL; ^ user.cpp:13:18: warning: unused variable ‘maxim’ [-Wunused-variable] {int n,l,i,j,r,c,maxim=0,poz,lun,lg,aux; ^ user.cpp:13:30: warning: variable ‘lun’ set but not used [-Wunused-but-set-variable] {int n,l,i,j,r,c,maxim=0,poz,lun,lg,aux; ^ user.cpp:13:37: warning: unused variable ‘aux’ [-Wunused-variable] {int n,l,i,j,r,c,maxim=0,poz,lun,lg,aux; ^ user.cpp:57:12: warning: ‘poz’ may be used uninitialized in this function [-Wmaybe-uninitialized] s[(poz-p[poz])/2]=NULL; ^