Compilare: user.c:4:2: warning: data definition has no type or storage class [enabled by default] t,n,N,i; ^ user.c:4:2: warning: type defaults to ‘int’ in declaration of ‘t’ [enabled by default] user.c:4:4: warning: type defaults to ‘int’ in declaration of ‘n’ [enabled by default] t,n,N,i; ^ user.c:4:6: warning: type defaults to ‘int’ in declaration of ‘N’ [enabled by default] t,n,N,i; ^ user.c:4:8: warning: type defaults to ‘int’ in declaration of ‘i’ [enabled by default] t,n,N,i; ^ user.c: In function ‘main’: user.c:8:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&t); ^ user.c:11:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d\n",&n); ^