How to write program that add two numbers,and it can circulately calculate?

Answer 1

please explain what you mean by "circularly calculate". perhaps give an example of some sample input and output that you would expect.

Answer 2

I want to write like this ：sum=a+b,this expretion is write by loop

Answer 3

sum=o
for(i.....)//how much u want to repeat ur loup
{
cin>>a>>b;
sum=sum+a+b;
}