Why is answer 6?

#1

lower_bound(15) it should be something >=15 but no element is greater than 15,so it points to end.Hence some garbagge vallue

#2

@alampallyvinith
hello vinith,
lower_bound(x) return the iteratior of array element which staisties <= property.

please send the question so that i can help u furthur,

#3

@aman212yadav
Hello aman,
lower_bound(x) gives iterator to something>=x,not <=x according to the lecture

#4

@alampallyvinith
yeah i am saying the same thing.

<= (this we read as greater than equal to right?)

#5

‘<=’ is less than equal to

#6

ok then it should be >=

#7

@aman212yadav
Now this is the code

#include
#include
#include
using namespace std;
int main()
{
sets;
s.insert(1);
s.insert(5);
s.insert(7);
s.insert(2);
s.insert(12);
s.insert(10);
auto it = s.lower_bound(15);
cout<< *it <<endl;
return 0;
}

answer my actual query

#8

@alampallyvinith

in this case ur lower bound will return s.end() and i think value of s.end() is number of elements stored in the set . In ur case there are total six elements stored in set that why getting 6 as the value

1 Like
#9

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