⑥主函数中，定义数组+int+a+[+N+]：调用函数+inita+(+a+）实现数组+a+元素的赋值；调用函数+out+(+a+)输出未排序的元素值。调用函数+sorted+(+a+）实现排序；调用

根据提供的引用内容，可以编写以下代码来实现题目要求：

#include <iostream>
#include <algorithm>
#include <string>

struct SimpleType {
    int field;
    std::string name;
    SimpleType() : field(0), name("Hello World") {}
};

int initA(int a[], int N) {
    std::cout << "initA() called" << std::endl;
    for (int i = 0; i < N; i++) {
        a[i] = i + 1;
    }
    return 1;
}

std::string initB() {
    std::cout << "initB() called" << std::endl;
    return "Hello";
}

void out(int a[], int N) {
    std::cout << "Unsorted elements: ";
    for (int i = 0; i < N; i++) {
        std::cout << a[i] << " ";
    }
    std::cout << std::endl;
}

void sorted(int a[], int N) {
    std::sort(a, a + N);
    std::cout << "Sorted elements: ";
    for (int i = 0; i < N; i++) {
        std::cout << a[i] << " ";
    }
    std::cout << std::endl;
}

int main() {
    const int N = 5;
    int a[N];
    int result = initA(a, N);
    std::cout << "initA() returned " << result << std::endl;
    out(a, N);
    sorted(a, N);
    return 0;
}

输出结果为：

initA() called
initA() returned 1
Unsorted elements: 1 2 3 4 5 
Sorted elements: 1 2 3 4 5