Compilare: user.c: In function ‘main’: user.c:9:10: warning: unused variable ‘c’ [-Wunused-variable] char c; ^ user.c:8:9: warning: unused variable ‘n’ [-Wunused-variable] int n,i,cf=0; ^ user.c:14:15: warning: array subscript is below array bounds [-Warray-bounds] fscanf(fin,"%c",&v[i]); ^ user.c:8:11: warning: ‘i’ may be used uninitialized in this function [-Wmaybe-uninitialized] int n,i,cf=0; ^