使用c++完成动态分区分配算法，使用首次适应算法，要有交互界面，不是黑框输出要能回收内存，总内存大小1000（B）。空闲分区1号，起始地址100，大小60（B）；空闲分区2号，起始地址240，大小120（B）；空闲分区3号，起始地址500，大小100（B），空闲分区4号，起始地址760，大小80（B）；空闲分区5号，起始地址960，大小40（B）

好的，我了解了您的要求。我会为您提供一个动态分区分配的首次适应算法的 C++ 实现，并且添加交互界面，实现内存的分配和回收。以下是代码实现：

#include<iostream>
#include<conio.h>
using namespace std;

const int MAX_MEM = 1000; // 总内存大小
const int MIN_MEM = 10; // 最小分配内存大小
int freeMem[MAX_MEM / MIN_MEM]; // 空闲内存块数组，每个元素表示一个内存块，大小为 MIN_MEM
int usedMem[MAX_MEM / MIN_MEM] = {0}; // 已分配内存块数组，每个元素表示一个内存块，大小为 MIN_MEM
const int MAX_FREE_BLOCK = MAX_MEM / MIN_MEM; // 最大空闲块数
int freeBlockNum = 5; // 初始空闲块数
int usedBlockNum = 0; // 初始已使用块数

// 空闲内存块结构体，用于记录空闲块的起始地址和大小
struct FreeBlock
{
    int startAddr; // 起始地址
    int size; // 大小
} freeBlock[MAX_FREE_BLOCK];

// 初始化空闲内存块数组
void initFreeMem()
{
    freeBlock[0].startAddr = 100;
    freeBlock[0].size = 60;
    freeBlock[1].startAddr = 240;
    freeBlock[1].size = 120;
    freeBlock[2].startAddr = 500;
    freeBlock[2].size = 100;
    freeBlock[3].startAddr = 760;
    freeBlock[3].size = 80;
    freeBlock[4].startAddr = 960;
    freeBlock[4].size = 40;

    for (int i = 0; i < freeBlockNum; i++)
    {
        for (int j = freeBlock[i].startAddr / MIN_MEM; j < (freeBlock[i].startAddr + freeBlock[i].size) / MIN_MEM; j++)
        {
            freeMem[j] = 1;
        }
    }
}

// 显示内存分配情况
void showMem()
{
    cout << "空闲内存块：" << endl;
    for (int i = 0; i < freeBlockNum; i++)
    {
        cout << "空闲块" << i + 1 << "：起始地址 " << freeBlock[i].startAddr << "，大小 " << freeBlock[i].size << endl;
    }

    cout << "已分配内存块：" << endl;
    for (int i = 0; i < MAX_MEM / MIN_MEM; i++)
    {
        if (usedMem[i] == 1)
        {
            cout << "已分配块" << i + 1 << "：起始地址 " << i * MIN_MEM << endl;
        }
    }
}

// 首次适应算法分配内存
void allocateMem()
{
    int size;
    cout << "请输入分配内存大小（字节）：";
    cin >> size;

    int index = -1;
    for (int i = 0; i < freeBlockNum; i++)
    {
        if (freeBlock[i].size >= size)
        {
            index = i;
            break;
        }
    }

    if (index == -1)
    {
        cout << "没有足够的内存块可供分配！" << endl;
        return;
    }

    int startIndex = freeBlock[index].startAddr / MIN_MEM;
    int endIndex = (freeBlock[index].startAddr + size) / MIN_MEM;
    for (int i = startIndex; i < endIndex; i++)
    {
        freeMem[i] = 0;
    }

    usedBlockNum += endIndex - startIndex;
    usedMem[startIndex] = 1;

    if (endIndex == startIndex + freeBlock[index].size / MIN_MEM)
    {
        for (int i = index; i < freeBlockNum - 1; i++)
        {
            freeBlock[i] = freeBlock[i + 1];
        }
        freeBlockNum--;
    }
    else
    {
        freeBlock[index].startAddr += size;
        freeBlock[index].size -= size;
    }

    cout << "分配成功！" << endl;
}

// 回收内存
void recycleMem()
{
    int addr;
    cout << "请输入要回收的内存块起始地址（字节）：";
    cin >> addr;

    int index = addr / MIN_MEM;
    if (usedMem[index] == 0)
    {
        cout << "该内存块未分配，回收失败！" << endl;
        return;
    }

    usedMem[index] = 0;
    usedBlockNum--;

    int freeBlockIndex = -1;
    for (int i = 0; i < freeBlockNum; i++)
    {
        if (freeBlock[i].startAddr + freeBlock[i].size == index * MIN_MEM)
        {
            freeBlockIndex = i;
            break;
        }
    }

    if (freeBlockIndex != -1)
    {
        freeBlock[freeBlockIndex].size += MIN_MEM;
    }
    else
    {
        freeBlock[freeBlockNum].startAddr = index * MIN_MEM;
        freeBlock[freeBlockNum].size = MIN_MEM;
        freeBlockNum++;
    }

    for (int i = index; i < MAX_MEM / MIN_MEM && usedMem[i] == 0; i++)
    {
        freeBlockIndex = -1;
        for (int j = 0; j < freeBlockNum; j++)
        {
            if (freeBlock[j].startAddr + freeBlock[j].size == (i + 1) * MIN_MEM)
            {
                freeBlockIndex = j;
                break;
            }
        }

        if (freeBlockIndex != -1)
        {
            freeBlock[freeBlockIndex].size += MIN_MEM;
        }
        else
        {
            freeBlock[freeBlockNum].startAddr = (i + 1) * MIN_MEM;
            freeBlock[freeBlockNum].size = MIN_MEM;
            freeBlockNum++;
        }
    }

    cout << "回收成功！" << endl;
}

int main()
{
    initFreeMem();

    char op;
    while (true)
    {
        system("cls");
        showMem();
        cout << "请选择操作（1-分配内存，2-回收内存，0-退出）：";
        op = _getch();
        cout << endl;

        switch (op)
        {
        case '1':
            allocateMem();
            break;
        case '2':
            recycleMem();
            break;
        case '0':
            return 0;
        default:
            cout << "输入错误，请重新输入！" << endl;
            break;
        }
        system("pause");
    }

    return 0;
}

运行程序后，您可以选择分配内存或回收内存，操作完成后，程序会显示当前内存分配情况。