C Program to Find Sum of digits of a Number Excluding First and Last Digits

 Program to Find Sum of a Number Excluding First and Last Digits

#include<stdio.h>

void main()

{

int n,num,x,sum=0,count=0,a,last,first,multiple=1;

printf("Enter a number: ");

scanf("%d",&n);

a=n;
//finding the sum of the digits

while(n>0)

{

x=n%10;

sum=sum+x;

n=n/10;

count++;

}

printf("Sum of digits of a number=%d \n the number of digits is %d",sum,count);

last = a%10;

printf("\nthe last digit is %d ",last );
//loop to find first digit of the number

for(;count-1;)

{

multiple *=10;

count--;

}

printf("\nthe first digit is %d ",first=a/multiple);
//subtracting first and last digit from number

printf("\nthe sum of digits excluding first and last digit is %d " ,sum-first-last);

}

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