How use Upper_bound() function in a structure array

[Najmuzzaman]

Code: Select all

#include <stdio.h>
#include <algorithm>
using namespace std;
struct node{
    int a,b;
}arr[10];

int main()
{
    for(i=0;i<10;i++)
    {
        arr[i].a=i+10;
        arr[i].b=i+12;
    }
    int it=(int)(upper_bound(arr,arr+10,10)-arr);
    printf("the position is %d");
}

Do not work

[zobayer]

you need to write a compare function that determines the behavior of your structre.
you can find out that from http://www.cplusplus.com