Use of lowerbund

#1

if lower-bound returns the address of element found then how int lb=lower_bound(…)-coins-1;
returns the index of the element?

#2

@pradhumangupta99 we subtract the base address from the given address, and because arrays are stored in contigous memory locations, this will give the number of elements between the 2 addresses, or in other words the index of our needed value.

#3

int is 4 bytes so difference between two addressees would lead into number of bytes not the no index?

#4

@pradhumangupta99 actually, pointers dont work like that. if its a pointer to int, then it jumps 4 bytes, not 1.

#5

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