Code:#include <iostream.h> int main() { int number1; int number2; int stonum; int count=0; int num1; int num2=1; cout<<"Enter one single-digit number: "; cin>>number1; cout<<"Enter one single-digit number: "; cin>>number2; cout<<endl; cout<<number1<<" "<<number2; while (((number1)!=(num1))&&((number2)!=(num2))) { if (count<1) { num1=number1; num2=number2; } count++; stonum=((num1+num2)%10); cout<<" "<<stonum; number1=number2; number2=stonum; } cout<<endl; return (0); }