CODEWITHSUNDEEP
c++while-loop
Anna
Anna

Reputation: 83

how to have an either/or condition in a do-while loop in c++

I'm writing an algorithm and I have a do-while loop in it. I want to be in that loop until either the GAP is small enough or number of iterations is higher than 1000. But it passes 100 iterations and doesn't stop. Here is the code:

int iteration=1;
double UB=0;
double LB=0;
double GAP=1;

do
{...
    GAP=abs((UB-LB)/LB);
    iteration++;
}while(GAP>=0.05 || iteration<=1000);

Upvotes: 0

Views: 1776

Answers (3)

CygnusX1
CygnusX1

Reputation: 21778

You missed the logic a bit ;)

If you want the loop to end if (conditionA or conditionB), then it means that you want to continue the loop if (conditionA AND conditionB).

In other words, you should have

while(GAP>=0.05 && iteration<=1000)

Upvotes: 2

Ed Heal
Ed Heal

Reputation: 59997

You need to change the '||' to '&&'

Upvotes: 0

Oliver Charlesworth
Oliver Charlesworth

Reputation: 272497

You probably want && instead of ||. You want to iterate until either of those expressions is false, therefore you want to iterate while both of them are true.

Upvotes: 4

Related Questions