Compilare: user.c:25:1: warning: return type defaults to ‘int’ [enabled by default] main() ^ user.c: In function ‘main’: user.c:28:12: warning: unused variable ‘nr’ [-Wunused-variable] int p,n,k,nr; ^ user.c:28:10: warning: unused variable ‘k’ [-Wunused-variable] int p,n,k,nr; ^ user.c: In function ‘functie’: user.c:24:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.c: In function ‘main’: user.c:30:8: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(myFile, "%d,", &p); ^ user.c:33:10: warning: ‘n’ is used uninitialized in this function [-Wuninitialized] fprintf(fp,"%d\n",n); ^