Write a c program to find the sum of first and last digit of any number

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#include<stdio.h>

int main(){

    int num;

    int sum=0,i,lastDigit;

    //Accepting the any number from users.

    printf("Enter any positive number more than one digit : ");

    scanf("%d",&num);

    //calculating the sum of first and last digit.

    sum = sum + num % 10; //adding the first digit.

    while(num != 0){

         lastDigit = num;

         num = num /10;

    }

    sum = sum + lastDigit; //adding the last digit.

    //printing the sum

    printf("\nSum of first and last digit of given numer is :%d",sum);

}

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Alogrithm:
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