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- // Hay kiem tra so nguyen duong n co toan so chan hay khong?
- // Khai bao ham thu vien
- #include<stdio.h>
- #include<conio.h>
- void main()
- {
- int n;
- scanf("%d",&n);
- int a;
- int dem=0;
- int m=0;
- while(n!=0)
- {
- a=n%10;
- if(a%2==0)
- {
- dem++;
- }
- n=n/10;
- m++;
- }
- if(m==dem)
- printf("Day so toan chan\n");
- else
- {
- printf("Khong day so toan chan\n");
- }
- }
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