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- #include<stdio.h>
- #include<math.h>
- int main(){
- int a, num, count=0, first_digit, last_digit;
- printf("Enter the number: ");
- scanf("%d", &num);
- a=num;
- while(a!=0){
- a /= 10;
- count++;
- }
- last_digit=num%10;
- first_digit=num/(int)pow(10, (count-1));
- num=num-(first_digit*(int)pow(10, count-1));
- num=(num-(last_digit))/10;
- if(count==2){
- printf("%d", last_digit);
- printf("%d", first_digit);
- }
- else{
- printf("%d", last_digit);
- printf("%d", num);
- printf("%d", first_digit);
- }
- }
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