Question

Write a program to input an integer and check whether it is a 4-digit number

or not. If it is, find the sum of the first and last digit. in java​

Answer 1

Answer:

include <iostream>

using namespace std;

int main() {

int n,temp,new_number =0,temp1,rev=0;;

cin>>n;

while(n!=0){

temp= n%10;

n=n/10;

if(temp==8){

temp=0;

}

else if(temp==9){

temp=1;

}

else

temp=temp+2;

new_number=new_number*10+temp; //this number is reversed of desired output

}

// now reverser the new_number to get answer;

while(new_number!=0){

temp1=new_number%10;

new_number=new_number/10;

rev = rev*10+temp1;

}

cout<<rev;

return 0;

}