conditional statements and while loop
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Hi,
I have the following while loop
while (dif1 > tol) && (dif2 > tol) && (dif3 > tol)
procedure
end
I want all the conditions to be simultaneously satisfied. However, when I execute the code, the second condition dif2 > tol is not satisfied although the algorithm stops.
what I am doing wrong here ?
3 个评论
Geoff Hayes
2014-11-24
If the second condition, dif2>tol is not satisfied then the while loop will stop because the code is "saying" do this procedure so long as dif1>tol AND dif2>tol AND dif3>top. So as soon as one of the three is not satisfied, then we stop executing the procedure. What are you expecting to happen instead of this?
Star Strider
2014-11-24
The double operands ‘&&’ and ‘| |’ ‘short circuit’ the comparisons. See: Logical Operators: Short-Circuit && | |. If the first is false, it will not evaluate any of the others.
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Adam
2014-11-24
while (dif1 > tol) || (dif2 > tol) || (dif3 > tol)
should work if you want to carry on until all are false.
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