# how to get the first digit of a number

var prevPostLink ="/2016/10/c-program-to-count-number-of-digits-in-number.html"; At the end we are left with the first digit. From the entered number, i want to extract the first digit in the number. Divide the number by 10^ (total_number_of_digits-1), it will give the first digit of the number. Select a blank cell for placing the checking result, then enter formula into the Formula Bar, and then press the Enter key. Follow 50 views (last 30 days) Mazhar Ali on 1 Feb 2019. For example, first digit … So if the typed in number is 43, i want to extract the 4, but not the 3. Finding first digit of any number is little expensive than last digit. Here we’ll see how to write C program to find a digit of a specified position in a number. Can anyone pls tell me what if x is an array of numbers can we seperate the 1st digit of each entry ..Like if x = [12 34 56 999 430 2] We first start by writing that last statement in mathematical terms: Believe it or not, we’re almost done. We can write this number as Axxxxxxxxx, where x’s denote other digits that we don’t care about. I was asked by my senior colleague to make a method which takes two arguments as input, first the number and second the number of digits to be returned from the first argument number, but the restriction was not to convert it to string. Add first and the last digit to the sum variable. How can I select specific parts of a number? The third digit gives the number of 2's The fourth digit gives the number of 3's in the number so on until the 10th digit which gives the number of 9's in the number. Introduction. }); How to find first and last digit of a number in C programming. However, I will solve this problem using a technique that works for all cases, even when divisibility rules cannot help you solve the problem. This snippet returns the first N digits of a number without converting the number to string.. Background. I came up with this method, which worked pretty well for me. To delete nth digit from ending: Get the number and the nth digit to be deleted. He works at Vasudhaika Software Sols. For example, the largest known prime is $2^{43,112,609}-1$, and I did sometime before a induction to find the first digit of a prime like that. We are dividing the number by 10 in the while loop. Pretty obvious, right? Well 1 is just a number like 2 to 9, right? And the poor old number 9 is the first digit only 5%of the time. So: Now, let’s take a look at 3^20. But since factorials can end up being too large, we would make a small tweak. ///

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