用C语言做一个可以播放音乐的八音盒

#Iinclude Beep( )函数

曲谱简谱，频谱对照表

结构储存简谱( tune音调，tone音色，hold音长)

功能函数（播放，初始化music结构，创建单曲，列表选择）

//声明部分#include#include#define LENTH 300//音长标准struct music{    unsigned tune;//音调    unsigned tone;//音色    unsigned hold;//音长};typedef struct music* song;//结构体指针static int size;//静态变量void init(song S,int *I);//初始化结构体void play(song S);//播放歌曲int record(void);//曲目void play_adv(song S);//高级播放song test(void);//测试歌曲song test_adv(void);//测试歌曲-高级song happy(void);//欢乐颂song star_adv(void);//小星星-高级

//主函数部分int main(){    char c;    printf('*******曲目********\n'            '[1].欢乐颂\n'            '[2].小星星\n'            '[0].测试音调\n'            '******************\n');    do{    printf('\n');    switch(record())//曲目选择    {        case 1: puts('--欢乐颂--'); play(happy());break;        case 2: puts('--小星星--'); play_adv(star_adv());break;        case 0: puts('--测试发声器--'); play(test());break;        default: puts('--高级测试发音--'); play_adv(test_adv());    }    printf('要继续吗(q退出)?');    c=getch();//自动获取输入    }while(c!='q');    puts('\n--结束--\n');    return 0;}

void init(song S,int *I)//初始化结构{    int i;    for(i=0;i

//附录：天空之城song sky(void){    static struct music sky[118];    int n[117]={    261,271,312,271,312,332,272,231,231,    262,251,262,312,252,232,242,231,241,312,    232,311,311,311,272,241,241,272,272,261,271,    312,271,312,332,272,231,231,262,251,262,312,    252,221,231,242,311,271,271,311,312,321,321,331,311,312,    311,271,261,261,272,252,262,311,321,332,321,332,352,    322,251,251,312,271,312,332,332,    261,271,312,272,321,321,312,251,252,342,332,322,312,    332,332,362,352,352,331,321,312,311,    322,311,321,322,352,332,332,362,352,    331,321,312,311,322,311,321,322,272,262    };    size=117;    init(sky,n);    return sky;}

//附录：同桌的你song mate(void){    static struct music mate[98];    int n[98]={    251,251,251,251,231,241,252,272,261,261,261,261,241,261,252,252,    251,251,251,251,271,261,251,241,242,241,241,241,241,231,221,    212,212,251,251,251,251,231,241,252,272,261,261,261,261,241,261,252,252,    251,251,251,251,271,261,251,241,242,241,241,241,241,231,221,212,212,    311,311,311,311,251,261,312,332,321,321,321,321,311,271,    262,262,271,271,271,271,271,311,322,252,271,271,311,321,311,271,312,312    };    size=98;    init(mate,n);    return mate;}

//附录：梁祝song liangzu(void){    static struct music liangzu[100];    int n[99]={    271,261,271,252,261,241,231,221,231,241,231,252,231,221,231,251,221,231,242,231,221,213,251,171,221,161,211,153,161,211,153,    132,152,161,212,221,161,211,151,252,311,261,251,231,251,223,222,231,171,161,152,161,211,221,131,211,    161,151,161,211,153,232,251,171,221,161,211,152,131,151,131,151,161,171,221,163,151,161,212,221,251,231,221,231,221,    211,161,151,132,212,162,211,161,151,131,151,161,211,153//,231,251,221,231,221,211,171,161,153    };    size=99;    init(liangzu,n);    return liangzu;}

size最大尺寸不能超过数组实际容量（否则程序停止运行）

音长不宜过短，否则蜂鸣器会罢工

添加新曲目，要三处改动（新曲目函数声明，switch选择标签，新曲目函数定义）

程序优化工作（调用频谱只需一次，传递指针避免拷贝，避免不必要的计算，具有可更新性）

当曲谱较长时，利用printf('%d',sizeof(数组n)/sizeof(int);快速得知size大小

结构数组必须声明为静态变量，否则函数结束后内存会释放掉

普通曲目：填写方便 ，音调三档（低中高），音长三档（越大音长越长）

高级曲目：信息准确 ，频谱更广（低中高八），音长任意（0~2000）