//Q41. Write a program to swap the first and last digit of a number.
 
#include <stdio.h>
#include <math.h>
 
int main() {
    int num, firstDigit, lastDigit, digits, swappedNum;
    printf("Enter a number: \n");
    scanf("%d", &num);
 
    lastDigit = num % 10;
    digits = (int)log10(num);
    firstDigit = num / (int)pow(10, digits);
 
    swappedNum = lastDigit * (int)pow(10, digits) +
                 (num % (int)pow(10, digits)) - lastDigit + firstDigit;
 
    printf("Number after swapping first and last digit: %d\n", swappedNum);
    return 0;
}
 

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