跪求~~~一道C语言编程题的答案~~~要程序代码~~

#include "stdio.h"
struct student
{ char name[20];
char address[50];
char city[20];
char state[10];
}stu[4];

void input()
{ int i; FILE *fp;
if((fp=fopen("a.txt","r"))==NULL)
{ printf("cannot open file.\n");
exit(0); }
for(i=0;i<4;i++)
fscanf(fp,"%s %s %s %s",stu[i].name,stu[i].address,stu[i].city,stu[i].state);
fclose(fp);
}
void output()
{ int i;
printf(" name:");
for(i=0;i<4;i++)
printf(" %s\t ",stu[i].name);
printf("\naddress:");
for(i=0;i<4;i++)
printf(" %s",stu[i].address);
printf("\ncity,state:");
for(i=0;i<4;i++)
printf(" %s,%s\t",stu[i].city,stu[i].state);

}

void main()
{ input();
output();

}

结果是这样么：
name: H.Baker D.Rosso K.Tims B.Williams
address: 614FreemanSt. 83ChambersSt. 819RidgewoodRd. 24TremontAve.
city,state: Orange,NJ Madison,NJ Millburn,NJ Brooklyn,NY

有问题hi我

a文件是你先处理好的还是用程序写？
程序输出的时候，具体格式是什么样的，请说清楚
是
Name:H.Baker，B.Williams...
还是
Name：B.Williams
Name：H.Baker
...