how is compare fn changing the output as it was said we are changing the condition >=key to <=key but for money =50 it will not change and pass the same address please explain in detail…and how for money=25 also it is working
and giving output please explain the code
Problem in use of compare function
hi @himanshuanand729,
ower bound is itself a function it will use tat comparator to comapare the parameters u dont have to mention that, u r changing the behavior of the default lowerbound function usnig comparator
return a<=b in custom compare works like upper_bound(it returns the first value which is not less than or equal to searched value) so lower_bound function with this custom compare will give you value just greater than searched value and subtracting -1 will give you the correct denomination of that money that will be either less than or equals to searched money.
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