用C语言做中介信息管理系统时的一个问题
用C做一个中介信息管理系统,还没把Search功能写好,但主函数都写好了,想先运行下看看是否出错。用的是VC++6。
首先，编译.OBJ时没有Error,但是有Warning.
warning C4013: 'clrscr ' undefined; assuming extern returning int
warning C4013: 'textmode ' undefined; assuming extern returning int
warning C4013: 'textbackground ' undefined; assuming extern returning int
warning C4013: 'window ' undefined; assuming extern returning int
warning C4013: 'gotoxy ' undefined; assuming extern returning int
warning C4013: 'textcolor ' undefined; assuming extern returning int
warning C4013: 'save1 ' undefined; assuming extern returning int
warning C4013: 'save2 ' undefined; assuming extern returning int
warning C4716: 'del1 ' : must return a value
warning C4716: 'del2 ' : must return a value
warning C4716: 'save1 ' : must return a value
warning C4716: 'save2 ' : must return a value
然后组建EXE，在link的时候出现
error LNK2001: unresolved external symbol _gotoxy
error LNK2001: unresolved external symbol _window
error LNK2001: unresolved external symbol _textbackground
error LNK2001: unresolved external symbol _textmode
error LNK2001: unresolved external symbol _clrscr
error LNK2001: unresolved external symbol _textcolor
Debug/ZHONGJIE.exe : fatal error LNK1120: 6 unresolved externals
网上先找过点资料，说是头文件要 <conio.h> ,但还是出错，希望各大侠帮忙小弟解决下，我先去写search的功能了~~。
最后附上我的源代码~~
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <conio.h>
#include <ctype.h>
#define ESC 27
#define NULL0
#define LEN sizeof(struct applicant)
#define LENB sizeof(struct job)
#define L sizeof(info1)
#define LB sizeof(info2)
int n,k;
char filename1[10];
char filename2[10];
struct applicant
{
long anum;
char aname[10];
char id[18];
char cert[20];
char rqurjob[20];
struct applicant * next1;
}applcnt[60],info1;
struct job
{
long jnum;
char jname[20];
int need;
struct job * next2;
}jb[100],info2;
/*------------color--------------*/
color()
{
int x1=20,y1=5,x2=60,y2=40,i;
clrscr();
textmode(3);
textbackground(2);
window(x1,y1,x2,y2);
for(i=1;i <=21;i++)
{
gotoxy(1,i);cprintf( " ");}
}
/*-------------menu-----------*/
menu()
{
char c;
color(); textcolor(19); gotoxy(17,3);cprintf( "MENU "); textcolor(4);
gotoxy(9,5);cprintf( "1 --input applicant record ");
gotoxy(9,6);cprintf( "2 --output applicant record ");
gotoxy(9,7);cprintf( "3 --delete applicant record ");
gotoxy(9,8);cprintf( "4 --insert applicant record ");
gotoxy(9,9);cprintf( "5 --search applicant record ");
gotoxy(9,10);cprintf( "6 --open applicant record ");
gotoxy(9,11);cprintf( "7 --input job record ");
gotoxy(9,12);cprintf( "8 --output job record ");
gotoxy(9,13);cprintf( "9 --delete job record ");
gotoxy(9,14);cprintf( "10 --search jobe record ");
gotoxy(9,17);cprintf( "0 --exit ");
gotoxy(15,20);cprintf( "Please Select: ");
c=getch();
if(ESC==c)exit(0);
return(c);
}
/*---------------create applicant information---------------*/
struct applicant * create1(void)
{
struct applicant * p1, * p2; struct applicant * head1;
struct applicant * load1(void);
struct applicant * arrange1(struct applicant * head1);
char c;
color();
n=0;
p1=p2=(struct applicant * )malloc(LEN);
textcolor(14);
gotoxy(7,3);cprintf( "Please Enter Record: ");
textcolor(1);
gotoxy(5,5);cprintf( "Enter Num: "); scanf( "%1d ",&p1-> anum);
if(p1-> anum==0){head1=NULL;goto end;}
gotoxy(5,7);cprintf( "Enter Name: "); scanf( "%s ",p1-> aname);
gotoxy(5,9);cprintf( "Enter Your ID Number: "); scanf( "%s ",p1-> id);
gotoxy(5,11);cprintf( "Enter Your Certification: "); scanf( "%s ",p1-> cert);
gotoxy(5,13);cprintf( "Enter Your Ideal Job: "); scanf( "%s ",p1-> rqurjob);
head1=NULL;
while(p1-> anum!=0)
{
n=n+1;
if(n==1)head1=p1;
else p2-> next1=p1;
p2=p1;
p1=(struct applicant *)malloc(LEN);
color();
textcolor(14);
gotoxy(6,3);cprintf( "Please Enter Record: ");
textcolor(1);
gotoxy(5,5);cprintf( "Enter Num: "); scanf( "%1d ",&p1-> anum);
if(p1-> anum==0) goto end;
gotoxy(5,7);cprintf( "Enter Name: "); scanf( "%s ",p1-> aname);
gotoxy(5,9);cprintf( "Enter Your ID number: "); scanf( "%s ",p1-> id);
gotoxy(5,11);cprintf( "Enter Your Certification: "); scanf( "%s ",p1-> cert);
gotoxy(5,13);cprintf( "Enter Your Ideal Job: "); scanf( "%s ",p1-> rqurjob);
}
end:p2-> next1=NULL;
head1=arrange1(head1);
gotoxy(5,16);cprintf( "Save(Y.or,N)? ");
c=getch();
if(c== 'Y '||c== 'y ')save1(head1);
else head1=load1();
return(head1);
}
/*---------------------create job information----------------------*/
struct job *create2(void)
{
struct job * p3, * p4; struct job * head2;
struct job *load2(void);
struct job *arrange2(struct job * head2);
char d;
color();
k=0;
p3=p4=(struct job *)malloc(LENB);
textcolor(14);
gotoxy(7,3);cprintf( "Please Enter Record: ");
textcolor(1);
gotoxy(5,5);cprintf( "Enter Job Number: "); scanf( "%1d ",&p3-> jnum);
if(p3-> jnum==0){head2=NULL;goto end;}
gotoxy(5,7);cprintf( "Enter Job Name: "); scanf( "%s ",p3-> jname);
gotoxy(5,9);cprintf( "Enter The Amount Of The Job Needs: "); scanf( "%i ",p3-> need);
head2=NULL;
while(p3-> jnum!=0)
{
k=k+1;
if(k==1)head2=p3;
else p4-> next2=p3;
p4=p3;
p3=(struct job * )malloc(LENB);
color();
textcolor(14);
gotoxy(7,3);cprintf( "Please Enter Record: ");
textcolor(1);
gotoxy(5,5);cprintf( "Enter Job Number: "); scanf( "%1d ",&p3-> jnum);
if(p3-> jnum==0) goto end;
gotoxy(5,7);cprintf( "Enter Job Name: "); scanf( "%s ",p3-> jname);
gotoxy(5,9);cprintf( "Enter The Amount Of The Job Needs: "); scanf( "%i ",p3-> need);
}
end:p4-> next2=NULL;
head2=arrange2(head2);
gotoxy(5,12);cprintf( "Save(Y.Or,N)? ");
d=getch();
if(d== 'Y '||d== 'y ')save2(head2);
else head2=load2();
return(head2);
}
[解决办法]
用TC编译.
VC没有提供clrscr(),gotoxy()这些库函数
[解决办法]
你是在用BGI库，
这个东西要用BC3.1来编译连接的。
不能用VC6
[解决办法]
把load1和load2的声明放在所有函数最前面,也就是#include之后
