求。C语言课程设计通讯录

#include<stdio.h>
#include<string.h>
#include<alloc.h>

FILE *fp;
int i;
char ch;

/*Address Struct Definition*/
struct member {
int number;
char name[20];
char telephone[13];
char address[50];
char post[6];
}members[50];

void Data_Menu(){
printf("\n-----------------------------------------------------------\n");
printf(" 1.Add");
printf(" 2.Delete");
printf(" 3.Search");
printf(" 4.Save");
printf(" 5.Exit");
printf("\n-----------------------------------------------------------\n");
}

void Data_Load(){
int j;
long k;
fp=fopen("members.txt","rt");
if(fp!=NULL){
for(i=1;i<50;i++){
j=fgetc(fp);
if(j==EOF){
return;
}
k=i-1;
fseek(fp