C Program to find whether the first digit of given number is odd or even

Description

```Get input num and check whether the first digit of number num is odd or even
Input:
34
Output
ODD

Input:
67
Output:
Even```

Solution

```#include<stdio.h>
int main()
{
int num;
printf("Enter a number:");
scanf("%d",&num);
while(num>=10)
{
num=num/10;
}

if(num%2==0)
{
printf("%d is even",num);
}
else
{
printf("%d is odd",num);
}
return 0;
}```

Explanation

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

Divide the number num by 10 untill it becomes lesser than 10. once it is less than 10 check whether the num is odd or even.

statement num = num/10 divides the num by 10 repeatedly untill it num is less than 10.```

Author - Ramesh P Natarajan

Learner, Professor, Technology Trainer, Software Developer and Content Marketer, very much passionate in the field of Software Application Development, Machine Learning and Search Engine Optimization.

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