why does it prints 6 ,isn’t it supposed to s.end().?
Lower_bound() in sets
hello @Codingniko121
The lower_bound() method in C++ is used to return an iterator pointing to the first element in the range [first, last) which has a value not less than val. This means that the function returns the index of the next smallest number just greater than that number.
there is no element greater than 15
hence end of container ie size of container is returned
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