Compilare: user.c: In function ‘main’: user.c:157:13: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘long int’ [-Wformat=] printf("%d\n",x); ^ user.c:158:13: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘long int’ [-Wformat=] fprintf(g,"%d\n",x); ^ user.c:39:27: warning: unused variable ‘aux’ [-Wunused-variable] int *v,n,i,*sol,*ap,j,aux,k,nr_z=0,nr; ^ user.c:43:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&n); ^ user.c:60:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&v[i]); ^ user.c:107:13: warning: ‘k’ may be used uninitialized in this function [-Wmaybe-uninitialized] ap[v[k]]--; ^