最后一个问题！谢谢大家了！

[salyly]

我做的是《职工信息管理系统》，但有个要求我不知道怎么做，希望大家指点：
*系统可以输出符合某种特征的职工信息：
1。全体职工信息表；
2。某职称的职工信息列表（下面的prof就是职称);
3。某年月以后出生的职工信息列表；
4。某年月以前出生的职工信息列表；
5。未婚职工信息列表；（下面marrige为婚姻状况）；
#include<stdio.h>
#include <stdlib.h>
#include <string.h>

struct person
{
char name[15];
char id[15];
char sex[15];
char birth[15];
char prof[15];
char educat[15];
char salary[15];
char marriage[15];
};

char filename[50];
FILE *fp;
void creat();
void output();
void search();
void append();
void modify();
void delet();

void main(void)
{
int m;

creat();
while(1)
{ printf("\n\n********************************************************************************");
printf("\ncreat,please enter 1");
printf("\nsearch,please enter 2");
printf("\nmodify,please enter3");
printf("\ndelete,please enter 4");
printf("\noutput,please enter 5");
printf("\nexit,please enter 0\n\n");
printf("********************************************************************************\n");
scanf("%d",&m);
if(m>=0&&m<=5)
{
switch(m)
{
case 1: append(); break;
case 2: search(); break;
case 3: modify(); break;
case 4: delet(); break;
case 5: output(); break;
case 0: exit(0);
}
printf("\n\nfinish,choose agian:");
}
else
printf("\n\nerror,choose again:");
}
}

void creat()
{
struct person one;
printf("\n\n********************************************************************************");
printf("\n\n weilcome to employee information managemnet system\n");
printf("\n********************************************************************************\n");
printf("\nenter file name:");
scanf("%s",filename);
if((fp=fopen(filename,"w"))==NULL)
{
printf("\nfail!");
exit(1);
}
fprintf(fp,"%-8s%-8s%-8s%-8s%-8s%-8s%-8s%-8s\n","name","id","sex","birth","prof","educat","salary","marriage");
printf("\nenter the name,id, sex,birth,prof,educat,salary and marriage(end with0)\n");
scanf("%s",one.name);
while(strcmp(one.name,"0"))
{
scanf("%s%s%s%s%s%s%s",one.id,one.sex,one.birth,one.prof,one.educat,one.salary,one.marriage);
fprintf(fp,"%-10s%-10s%-10s%-10s%-10s%-10s%-10s%-10s\n",one.name,one.id,one.sex,one.birth,one.prof,one.educat,one.salary,one.marriage);
scanf("%s",one.name);
}
fclose(fp);
}

void output()
{
struct person one;

if((fp=fopen(filename,"r"))==NULL)
{
printf("\nfail!");
exit(1);
}
printf("\n\n%50s\n","employee information system\n\n");
while(!feof(fp))
{
fscanf(fp,"%s%s%s%s%s%s%s%s\n",one.name,one.id,one.sex,one.birth,one.prof,one.educat,one.salary,one.marriage);
printf("%-10s%-10s%-10s%-10s%-10s%-10s%-10s%-10s\n",one.name,one.id,one.sex,one.birth,one.prof,one.educat,one.salary,one.marriage);
}
fclose(fp);
}

void append()
{
struct person one;

if((fp=fopen(filename,"a"))==NULL)
{
printf("\nfail!");
exit(1);
}
printf("\nenter new created employee's name,id, sex,birth,prof,educat,salary and marriage\n");
scanf("%s%s%s%s%s%s%s%s",one.name,one.id,one.sex,one.birth,one.prof,one.educat,one.salary,one.marriage);
fprintf(fp,"%-10s%-10s%-10s%-10s%-10s%-10s%-10s%-10s\n",one.name,one.id,one.sex,one.birth,one.prof,one.educat,one.salary,one.marriage);
fclose(fp);
}

void search()
{
int k=0;
char namekey[8];
struct person one;

printf("\nenter name:");
scanf("%s",namekey);

if((fp=fopen(filename,"rb"))==NULL)
{
printf("\nfail!");
exit(1);
}
while(!feof(fp))
{
fscanf(fp,"%s%s%s%s%s%s%s%s\n",one.name,one.id,one.sex,one.birth,one.prof,one.educat,one.salary,one.marriage);
if(!strcmp(namekey,one.name))
{
printf("\n\nfind,here is:");
printf("\n%-10s%-10s%-10s%-10s%-10s%-10s%-10s%-10s\n",one.name,one.id,one.sex,one.birth,one.prof,one.educat,one.salary,one.marriage);
k=1;
}
}
if(!k)
printf("\n\nsorry,no such one!");
fclose(fp);
}

void modify()
{
int k=0;
long offset;
char namekey[8];
struct person one;

printf("\nenter name:");
scanf("%s",namekey);

if((fp=fopen(filename,"r+"))==NULL)
{
printf("\nfail!");
exit(1);
}
while(!feof(fp))
{
offset=ftell(fp);
fscanf(fp,"%s%s%s%s%s%s%s%s\n",one.name,one.id,one.sex,one.birth,one.prof,one.educat,one.salary,one.marriage);
if(!strcmp(namekey,one.name))
{
k=1;
break;
}
}
if(k)
{
printf("\nfind,here is:");
printf("\n%-10s%-10s%-10s%-10s%-10s%-10s%-10s%-10s",one.name,one.id,one.sex,one.birth,one.prof,one.educat,one.salary,one.marriage);
printf("\nenter new name,id,sex,birth,prof,educat,salary and marriage:\n");
scanf("%s%s%s%s%s%s%s%s",one.name,one.id,one.sex,one.birth,one.prof,one.educat,one.salary,one.marriage);
fseek(fp,offset,SEEK_SET);
printf("%ld",ftell(fp));
fprintf(fp,"%-10s%-10s%-10s%-10s%-10s%-10s%-10s%-10s\n",one.name,one.id,one.sex,one.birth,one.prof,one.educat,one.salary,one.marriage);
}
else
printf("\nsorry,no such one!");
fclose(fp);
}

void delet()
{
int m,k=0;
long offset1;
char namekey[8];
struct person one;

printf("\nenter name:");
scanf("%s",namekey);
if((fp=fopen(filename,"r+"))==NULL)
{
printf("\nfail!");
exit(1);
}
while(!feof(fp))
{
offset1=ftell(fp);
fscanf(fp,"%s%s%s%s%s%s%s%s\n",one.name,one.id,one.sex,one.birth,one.prof,one.educat,one.salary,one.marriage);
if(!strcmp(namekey,one.name))
{
k=1;
break;
}
}
if(k)
{
printf("\nfind,here is:");
printf("\n%-10s%-10s%-10s%-10s%-10s%-10s%-10s%-10s",one.name,one.id,one.sex,one.birth,one.prof,one.educat,one.salary,one.marriage);
printf("\nsure to del,enter 1;else,enter 0:");
scanf("%d",&m);
if(m)
{
fseek(fp,offset1,SEEK_SET);
fprintf(fp,"%-10s%-10s%-10s%-10s%-10s%-10s%-10s%-10s\n","","","","","","","","");
}
}
else
printf("\nsorry,no such one!");
fclose(fp);
}
承蒙各位鞭策，终于弄到现在，希望大家帮忙！指点！最好告知方法，以及插入地点！谢谢！

[lemon520]

UP!