Compilare: user.c: In function ‘main’: user.c:28:5: warning: format ‘%lld’ expects argument of type ‘long long int *’, but argument 3 has type ‘int *’ [-Wformat=] fscanf(f1,"%lld",&f[i]); ^ user.c:24:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1,"%d%d",&k,&p); ^ user.c:28:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1,"%lld",&f[i]); ^ user.c:46:14: warning: ‘last’ may be used uninitialized in this function [-Wmaybe-uninitialized] l+=last+1; ^