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- #include<stdio.h>
- #include<conio.h>
- int dem(int n)
- {
- int dem=0;
- while(n!= 0)
- {
- n=n/10;
- dem++;
- }
- return dem;
- }
- main()
- {
- int n;
- printf (" Nhap so nguyen n:");
- scanf ("%d", &n);
- printf (" Vay so chu so cua n la:%d",dem(n));
- getch();
- return 0;
- }
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