Compilare: user.c: In function ‘nrcifrezero’: user.c:6:16: warning: unused variable ‘t’ [-Wunused-variable] int nr = 0,t = -1; ^ user.c: In function ‘main’: user.c:38:17: warning: unused variable ‘b’ [-Wunused-variable] int p,a = 0,b = 1000000000,z; ^ user.c:38:11: warning: unused variable ‘a’ [-Wunused-variable] int p,a = 0,b = 1000000000,z; ^ user.c:39:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&p); ^