loop_over_array.c

// Example in posts on Rust borrow system
#include <stdio.h>

typedef struct {
    int age;
    int is_oldest;
} Person;

int main() {
    Person people[] = {
        {10, 0},
        {8, 0},
        {14, 0}
    };
    int length = sizeof(people) / sizeof(people[0]);
    Person *oldest = &people[0];

    for (int i = 1; i < length; i++) {
        if (people[i].age > oldest->age) {
            oldest = &people[i];
        }
    }

    oldest->is_oldest = 1;

    return 0;
}