Compilare: user.c: In function ‘main’: user.c:15:15: warning: unused variable ‘i’ [-Wunused-variable] int nr =0,i; ^ user.c:14:12: warning: unused variable ‘val’ [-Wunused-variable] char **val; ^ user.c: In function ‘cheie’: user.c:96:29: warning: ‘return’ with a value, in function returning void [enabled by default] return NULL; ^ user.c:51:9: warning: unused variable ‘k’ [-Wunused-variable] int k=0; ^ user.c:35:11: warning: variable ‘j’ set but not used [-Wunused-but-set-variable] int i,j; ^ user.c: In function ‘valoare’: user.c:120:13: warning: unused variable ‘j’ [-Wunused-variable] int i=0,j=0,nrdoupuncte=0,nrghilimele=0,nrcur=0; ^