Question

Input 12457

Output 1+7=8

Input 55529

Output 5+9=14
JAVA или С++

Answer 1

#include <iostream>

#include <cstring>

using namespace std;

int main(){

   string num;

   int sum;

   cout<<"Input number:"<<endl;

   cin>>num;

   sum = num[0] - '0' + num.back() - '0';

   cout<<"Output number: "<< sum << endl;

   return 0;

}