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C program to find first and last digit of any number

C program to find first and last digit of any number

Write a C program to input a number from user and find first and last digit of number using loop. How to find first and last digit of a number in C programming.

Logic to find last digit of a number

Before I explain logic to find first digit, let us first learn to find last digit of a number.

To find last digit of a number in programming we use modulo operator %. A number when modulo divided by 10 returns its last digit.

Suppose if n = 1234
then lastDigit = n % 10 => 4

Let us implement the above logic to find last digit.

#include <stdio.h>

int main()
{
    int n, lastDigit;

    /* Input number from user */
    printf("Enter any number: ");
    scanf("%d", &n);

    /* Get the last digit */
    lastDigit = n % 10;

    printf("Last digit = %d", lastDigit);

    return 0;
}

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