Compilare: user.c: In function ‘main’: user.c:47:21: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘int *’ [-Wformat=] fprintf(out, "%d", &n); ^ user.c:26:21: warning: variable ‘m’ set but not used [-Wunused-but-set-variable] int p, n, i, k, m; ^ user.c:26:15: warning: unused variable ‘i’ [-Wunused-variable] int p, n, i, k, m; ^ user.c:35:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d", &p); ^ user.c:45:19: warning: ‘p’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(k==p) ^