Compilare: user.c: In function ‘main’: user.c:8:5: warning: format ‘%u’ expects argument of type ‘unsigned int *’, but argument 3 has type ‘long int *’ [-Wformat=] fscanf(fp,"%u %u",&a,&b); ^ user.c:8:5: warning: format ‘%u’ expects argument of type ‘unsigned int *’, but argument 4 has type ‘long int *’ [-Wformat=] user.c:16:5: warning: format ‘%u’ expects argument of type ‘unsigned int’, but argument 3 has type ‘long int’ [-Wformat=] fprintf(fout,"%u",b); ^ user.c:8:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fp,"%u %u",&a,&b); ^