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- #include<stdio.h>
- #include<math.h>
- //so doi xung
- //bai ngay em cho so nguyen cunng duoc khong can duong :))
- int main() {
- int n, i, sum = 0, count= 0, m;
- printf("nhap vao so can tra:");
- scanf("%d", &n);
- m = n;
- do {
- count++;
- i = n % 10;
- sum = sum + i * 10 * count;
- n = n / 10;
- }
- while(n != 0);
- if( m < 10 && m > -10) {
- printf("\nso do khong la so doi xung");
- }
- else if(m == sum) {
- printf("\nso do la so doi xung");
- }
- else
- printf("\n so do khong la so doi xung");
- return 0;
- }
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