C++ :

#include<iostream>
using namespace std;
int main()
{
    int a,b,c,d;
    cin>>a;
    b=a/100;
    c=a%100/10;
    d=a%100%10;
    cout<<b<<"+"<<c<<"+"<<d<<"="<<b+c+d<<endl;
	return 0; 
}

Pascal :

var
  s,s1,s2:shortint;p:string;
begin
  readln(p);
  val(p[1],s);
  val(p[2],s1);
  val(p[3],s2);
  writeln(s,'+',s1,'+',s2,'=',s+s1+s2);
end.