#include <algorithm>
#include <iostream>
 
struct student{
   char name[20];
   int age;
   char add[40];
};
 
int main()
{
   student stu[5] = {
       {"John Doe", 16, "somewhere"},
       {"John Smith", 42, "somewhere"},
       {"Peter", 18, "somewhere"},
       {"Anonymous", 19, "somewhere"},
       {"Not me", 21, "somewhere"},
    };
 
    auto it = std::max_element(std::begin(stu), std::end(stu),
        [](const student& lhs, const student& rhs) {
            return lhs.age < rhs.age;
    });
    std::cout << "Oldest is " << it->name << " with " << it->age << std::endl;
    return 0;
}
 
 

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