C语言读取TXT文件内容并排序！ 急！ 在线等！

给你写了一个，累死了，给我加分啊~~
程序运行完之后txt中的内容会变成三段，如果想要再运行一遍，需要将txt内容还原成最初的，否则会出错。

#include
#include

typedef struct
{
char nation[128];
int gold;
int silver;
int bronze;
int sum;
}medal;

void main()
{
medal table[20];
medal tmp;
char buf[256];
char title[256];
FILE *fp;
int table_len = 0,i,j;

fp = fopen("text.txt","r+");
if(fp == NULL)
{
printf("read error!\n");
return;
}
fgets(title,256,fp);
fputs(title,stdout);
while(fgets(buf, 256, fp) != NULL)
{
sscanf(buf, "%[^1-9]%d%d%d%d",table[table_len].nation,&table[table_len].gold, &table[table_len].silver, \
&table[table_len].bronze,&table[table_len].sum);
printf("%s%-6d%-8d%-8d%d\n",table[table_len].nation,table[table_len].gold,table[table_len].silver, \
table[table_len].bronze,table[table_len].sum);
table_len++;
}

printf("\nOrder by country name：\n");
fprintf(fp, "\nOrder by country name：\n");
fputs(title,stdout);
fputs(title,fp);
for(j=0; j<(table_len-1); j++)
{
for(i=0; i<(table_len-1-j);i++)
{
if(strcmp(table[i].nation, table[i+1].nation) > 0)
{
tmp = table[i];
table[i] = table[i+1];
table[i+1] = tmp;
}
}
}
for(i=0;i {
printf("%s%-6d%-8d%-8d%d\n",table[i].nation,table[i].gold,table[i].silver, \
table[i].bronze,table[i].sum);
fprintf(fp,"%s%-6d%-8d%-8d%d\n",table[i].nation,table[i].gold,table[i].silver, \
table[i].bronze,table[i].sum);
}

printf("\nOrder by number of medals：\n");
fprintf(fp, "\nOrder by number of medals：\n");
fputs(title,stdout);
fputs(title,fp);
for(j=0; j<(table_len-1); j++)
{
for(i=0; i<(table_len-1-j);i++)
{
if(table[i].sum > table[i+1].sum)
{
tmp = table[i];
table[i] = table[i+1];
table[i+1] = tmp;
}
}
}

for(i=0;i {
printf("%s%-6d%-8d%-8d%d\n",table[i].nation,table[i].gold,table[i].silver, \
table[i].bronze,table[i].sum);
fprintf(fp,"%s%-6d%-8d%-8d%d\n",table[i].nation,table[i].gold,table[i].silver, \
table[i].bronze,table[i].sum);
}
fclose(fp);
}

#include 
#include 
//假设要打开的文件内容全是整数(如果是浮点数参照修改) 
//数据与数据之间用空格分开 
//每行多少数据可以不相同 

//数组从小到大排序
void sortit(int *a,int n) {
	int i,j,m;
	for(i=0;i	for(j=i+1;j		if(a[i]>a[j]){
		m=a[i];a[i]=a[j];a[j]=m;		
	}
}
//输出数组元素
void printit(int *a,int n){
	int i;
	for(i=0;i		printf("%5d",a[i]);
		if (i%10==9) printf("\n");   //设置每10个换行 
	}
} 
//从文件fp中读取n个数据到a
void getdata(FILE *fp,int *a,int n){
	int i;
	fseek(fp,0,0);
	for(i=0;i		fscanf(fp,"%d",&a[i]);
}

//获取文件中整数数椐的个数	
int getdatabound(FILE *fp){
	int i=0,n;
	fseek(fp,0,0);
	while(fscanf(fp,"%d",&n)!=EOF) i++;
	return i;
}
int main(){
	int n,*a;
	char *myfile="d:\\data.txt";
	FILE *fp;
	if ((fp=fopen(myfile,"r"))==NULL){
		printf("打开文件%s失败\n",myfile);
		return 0;
	}
	n=getdatabound(fp);    //获取该文件中有多少整数 
	printf("该文件共有%d个整数\n",n);
	a=(int *)malloc(sizeof(int)*n);  //分配n个整数的空间
	getdata(fp,a,n);    //从文件fp中读取n个数据到a 
	fclose(fp);	
	printf("排序前的数组\n");
	printit(a,n);     //输出数组的值 
	printf("\n");
	
	sortit(a,n);
	
	printf("排序后的数组\n");
	printit(a,n);
	printf("\n");
}

下面是可以实现1的代码。
#include
#include
#include

char buf[439];
int read_txt( FILE *name );
main()
{
int res;
FILE *file;
file = fopen ( "C:\\Users\\yyy\\Desktop\\111.txt", "r" );
res = read_txt( file );
if (res == 0)
printf("sucessful !\n");
else
printf("error !\n");

system( "pause" );
return 0;
}

int read_txt( FILE *name )
{
if ( name != NULL )
fread(buf, 1024, 1, name);

printf("%s\n", buf);
return 0;
}

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