#include <stdio.h>
#include <stdlib.h>
#include <string.h>
typedef struct        //定义一个结构体
{
    char song[100];
    char singer[10];
    int number;
    char special[10];
    char genre[10];
}KTVSong;

//定义一个静态的常量，记录songs数组中元素的个数，歌曲所在的位置可以用KTVsong里面的number控制。

int menu();                //声明函数
void choose();            //声明函数
void add();                //声明函数
void edt();                //声明函数
void del();                //声明函数
void req();                //声明函数
void bro(KTVSong);        //声明函数

int main()//主函数
{
    KTVSong songs[100];
    choose(menu());

    //用到bro的时候传songs进去

}

int menu()//菜单功能函数
{
    int n;
    printf("\npress any key to enter the menu");
    getch();
    system("cls");
    printf("*********************************************************************\n");
    printf("\t\t\tWELCOME TO KTV SYSTEM\n");
    printf("**********************************MENU*******************************\n");
    printf("\t\t\tINPUT 1 TO ADD     SONGS\n");
    printf("\t\t\tINPUT 2 TO EDIT    SONGS\n");
    printf("\t\t\tINPUT 3 TO DELETE  SONGS\n");
    printf("\t\t\tINPUT 4 TO REQUEST SONGS\n");
    printf("\t\t\tINPUT 5 TO BROWSE  SONGS\n");
    printf("\t\t\tINPUT 6 TO EXIT");
    printf("*********************************************************************\n");
    do
    {
        printf("\n\n\t\t\tENTER YOUR CHOICE(1-6):");
        scanf("%d",&n);
    }while(n < 1 || n > 6);
    return(n);
}

void choose(int i)//选择功能函数
{
    if(i == 1)
        add();
    else if(i == 2)
        edt();
    else if(i==3)
        del();
    else if(i==4)
        req();
    else if(i==5)
        bro();
    else
        exit(0);
}
void add()//添加功能函数
{
    int i = 0;
    char src_address[50] , tar_address[50] , ch;
    KTVSong songs[100];
    FILE *infile , *outfile;

    do
    {
        flushall();

        printf("\nPlease input the singer of the song:");

        gets(songs[i].singer);

        flushall();

        printf("\nPlease input the name of the song:");

        gets(songs[i].song);

        songs[i].number = i;

        flushall();

        printf("\nPlease input the special of the song:");

        gets(songs[i].special);

        flushall();

        printf("\nPlease input the genre of the song:");

        gets(songs[i].genre);

        flushall();

        printf("\nPlease input the address(the lyric of the song,for example D:\\songs\\hello.txt):");

        gets(src_address);

        flushall();

        printf("Please choose the address that your want to save the lyric(for example E:\\songs):");

        gets(tar_address);

        infile = fopen(src_address,"r");
        outfile = fopen(strcat(strcat(strcat(tar_address , "\\"), songs[i].song),".txt"),"w");

        if(!infile || !outfile)
        {
            printf("Save the lyric failed!");
            exit(1);
        }

        while(!feof(infile))
        {
            ch = fgetc(infile);

            if(ch == EOF)
            break;

            fputc(ch , outfile);
        }

        fclose(infile);
        fclose(outfile);
        printf("Lyric added successfully!\n");
        i++;
    }while(menu() == 1);
}

void edt()//编辑功能函数
{
    bro();
    //属性修改就行。
    //歌词，删掉重新添加一个。（可以把删除、添加歌词做成一个单独的函数）；
}
void del()//删除功能函数
{
    char file[100];

    bro();

    printf("Please choose the song'number that your want to delete:");

    //删除，并重新调整songs数组，同时删掉对应的歌词。歌词路径通req()函数中的处理。

    if(remove(file) == 0)
        printf("Removed %s\n",file);
    else
        perror("remove");
}
void req()//点歌功能函数
{
    FILE *infile;

    bro(songs);//传songs进来

    printf("Please choose the song'number that your want to request:");//根据编号点歌，同理可以多些几个函数在这调用。

    //根据选择的条件，找到歌词文件的路径，解决办法：可以在上面的结构体中加一个属性，lyric_address[30]记录歌词存放的路径，方便查询和删除。

    infile = fopen(src_address,"r");
    if(!infile)
        {
            printf("Read the lyric failed!");
            exit(1);
        }

        while(!feof(infile))
        {
            ch = fgetc(infile);

            if(ch == EOF)
            break;

            printf("%s",ch);;
        }

        fclose(infile);
}
void bro(KTVSong) //浏览功能函数
{
    //编号 专辑 歌手 名称（按照编号。。。可以多些几个函数，方便分类查询）
    int i;
    printf("Please choose the condition:\n");
    printf("Query by singer to input 1\n");
    printf("Query by special to input 2\n");
    printf("Query all to input Enter\n");

    while(getch() != 1 && getch() != 2)
    {
        printf("Bad choosen!\n");
        printf("Input the choosen that you want:");
    }

    if(getch() == '\n')//可以单独写成函数，这里调用
    {
        for(i = 0 ; i < KTVSong.lenth ; i++) //KTVSong.lenth用上面定义那个静态常量代替
        {
            printf("*\t%s\t",songs[i].song);
            printf("%s\t",songs[i].singer);
            printf("%s\t",songs[i].number);
            printf("%s\t",songs[i].special);
            printf("%s\n",songs[i].genre);
        }
    }
    else if(getch() == 1) //可以单独写成函数，这里调用
    {
        char singer[30];
        printf("Please input the singer:");
        for(i = 0 ; (singer[i] = getch()) != '\n' ; i++);
        for(i = 0 ; i < KTVSong.lenth ; i++) //KTVSong.lenth用上面定义那个静态常量代替
        {
            if(songs[i].singer.equals(singer))
            {
                printf("*\t%s\t",songs[i].song);
                printf("%s\t",songs[i].number);
                printf("%s\t",songs[i].special);
                printf("%s\n",songs[i].genre);
            }
        }
    }
    else if(getch()==2) //可以单独写成函数，这里调用
    {
        char special[30];
        printf("Please input the special:");
        for(i = 0 ; (special[i] = getch()) != '\n' ; i++);
        for(i = 0 ; i < KTVSong.lenth ; i++)  //KTVSong.lenth用上面定义那个静态常量代替
        {
            if(songs[i].special.equals(special))
            {
                printf("*\t%s\t",songs[i].song);
                printf("%s\t",songs[i].singer);
                printf("%s\t",songs[i].number);
                printf("%s\n",songs[i].genre);
            }
        }
    }
}

嗯~  麻烦您了   谢谢帮忙哈