C Program to Find First and Last Digit of a Number

C Write a C program to find first and last digit of the user input number, without using looping.

Source Code: C Program to Find First and Last Digit of a Number

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1.    
2. #include < stdio.h >  
3. #include < math.h >  
4.   
5. int main()  
6. {  
7.     int num, first, last, count;  
8.   
9.     printf("Enter an integer number\n");  
10.     scanf("%d", &num);  
11.   
12.     count = log10(num);  
13.   
14.     first = num / pow(10, count);  
15.     last  = num % 10;  
16.   
17.     printf("First Digit = %d\nLast Digit = %d\n", first, last);  
18.   
19.     return 0;  
20. }  

Output 1:
Enter an integer number
123
First Digit = 1
Last Digit = 3

Output 2:
Enter an integer number
123456
First Digit = 1
Last Digit = 6

Output 3:
Enter an integer number
15937
First Digit = 1
Last Digit = 7

Output 4:
Enter an integer number
5986
First Digit = 5
Last Digit = 6

Output 5:
Enter an integer number
964801
First Digit = 9
Last Digit = 1