Java Program to print the first digit of a given number

Get input num and display the first digit of number num

Sample Input 1:

675

Sample Output 1:

The fisrt digit is :6

Program or Solution

				
			
					
			
				
			

Program Explanation

1. Get num (to which first digit is to be identified)

2. Instruction(s) inside the while block{} are executed repeatedly till expression (num>=10) is true.

3. Divide the number num by 10 untill it becomes lesser than 10.

    once it is less than 10 print the num using system.out.println.

statement num = num/10 divides the num by 10 repeatedly until it num is less than 10


Example 

487

487/10 = 48

48 / 10 = 4

4 is less than 10, so print it.


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