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/*************************************************查询函数**********************************************/

void search()

{

int flag,j,x;

char w[20];

FILE *fp;

char v[20];

printf("(1)按作者\n");

printf("(2)按歌手\n");

printf("(3)按曲名\n");

printf("请选择操作方式:\n");

scanf("%d",&x);

if(x==3)

{

flag=0;

printf("请输入歌曲名称:");

scanf("%s",&w);

fp=fopen("data.txt","rb");

for(j=0;j<100;j++)

{

if(fread(&dan[j],sizeof(struct song),1,fp)!=1) break;

if(strcmp(dan[j].name,w)==0)

{

printf("曲名:%s\n",dan[j].name);

printf("作者:%s\n",dan[j].author);

printf("歌手:%s\n",dan[j].singer);

printf("发行日期:%s\n",dan[j].time);

printf("---------------------------------\n");

flag=1;

}

}

if(flag==0)

printf("未找到歌曲!\n");

fclose(fp);

}

else if(x==2)

{

flag=0;

printf("请输入歌手:");

scanf("%s",&v);

fp=fopen("data.txt","rb");

for(j=0;j<100;j++)

{

if(fread(&dan[j],sizeof(struct song),1,fp)!=1) break;

if(strcmp(dan[j].singer,v)==0)

{

printf("曲名:%s\n",dan[j].name);

printf("作者:%s\n",dan[j].author);

printf("歌手:%s\n",dan[j].singer);

printf("发行日期:%s\n",dan[j].time);

printf("---------------------------------\n");

flag=1;

}

}

if(flag==0)

printf("未找到歌曲!\n");

fclose(fp);

}

else if(x==1)

{

flag=0;

printf("请输入作者:");

scanf("%s",w);

fp=fopen("data.txt","rb");

for(j=0;j<100;j++)

{

if(fread(&dan[j],sizeof(struct song),1,fp)!=1) break;

if(strcmp(dan[j].author,w)==0)

{

printf("曲名:%s\n",dan[j].name);

printf("作者:%s\n",dan[j].author);

printf("歌手:%s\n",dan[j].singer);

printf("发行日期:%s\n",dan[j].time);

printf("---------------------------------\n");

flag=1;

}

}

if(flag==0)

printf("未找到歌曲!\n");

fclose(fp);

}

else printf("Error!\n");

}

/*******************************************************************************************************/

/**************************************************主函数**********************************************/

void main()

{

int a;

while(1)

{

printf("/**********************************歌曲信息管理系统****************************/");

printf("\t\t\t\t1.歌曲输入\n");

printf("\t\t\t\t2.歌曲删除\n");

printf("\t\t\t\t3.歌曲浏览\n");

printf("\t\t\t\t4.歌曲查询\n");

printf("\t\t\t\t0.退出\n");

printf("/*****************************************************************************/\n");

printf("请选择操作种类(0-4):");

scanf("%d",&a);

if(a==0) break;

switch(a)

{

case 1:enter();break;

case 2:delete1();break;

case 3:browse();break;

case 4:search();break;

}

}

}

/*************************************************end 赖德发.2014.01.04****************************************************/