Compilare: user.c: In function ‘main’: user.c:10:5: warning: format ‘%d’ expects argument of type ‘int *’, but argument 3 has type ‘long unsigned int *’ [-Wformat=] fscanf(fp,"%d",&p); ^ user.c:19:5: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘long unsigned int’ [-Wformat=] fprintf(f,"%d",5*(p-N)); ^ user.c:10:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fp,"%d",&p); ^