注释的那一行为什么错了呢？~~~
程序的目的是建立两个链表并合并再升序排列，可以正确运行，但是用注释隔离的那行输出语句不知道错那里~~~
#include <stdio.h>
#include <malloc.h>
#include <stdlib.h>
#define NAMELEN 10
#define NULL 0
#define LEN sizeof(struct data)
struct data
{
long num;
char name[NAMELEN];
struct data *next;
};
struct data *Crt(void)
{
int count=1;
struct data *head,*fwd,*bwd;
head=fwd=(struct data*)malloc(LEN);
head-> num=-1;
do
{
bwd=fwd;
fwd=bwd-> next=(struct data*)malloc(LEN);
printf( "Stu %-4d\n ",count++);
printf( "Num => ");
scanf( "%ld ",&fwd-> num);
printf( "Name => ");
scanf( "%s ",&fwd-> name);
}
while(fwd-> num);
bwd-> next=NULL;
return(head);
}
void link(struct data *A_head,struct data *B_head)
{
struct data *fwd=A_head;
fwd=fwd-> next;
while(fwd-> next!=NULL)
fwd=fwd-> next;
fwd-> next=B_head-> next;
}
void ord(struct data *head)
{
struct data *fwd,*flw,*ord;
ord=fwd=flw=head;
fwd=fwd-> next;
while(ord-> next!=NULL)
{
if (fwd-> num <ord-> next-> num)
{
flw-> next=fwd-> next;
fwd-> next=ord-> next;
flw=ord-> next=fwd;
fwd=fwd-> next;
}
else
{
flw=flw-> next;
if (fwd-> next!=NULL)
fwd=fwd-> next;
else
{
ord=ord-> next;
fwd=ord-> next;
flw=ord;
}
}
}
}
void print(struct data *fwd)
{
int count=1;
fwd=fwd-> next;
while(fwd!=NULL)
{
printf( "Stu %-4d ",count++);
/*printf( "Num %-4d Name %s\n ",fwd-> num,fwd-> name);*/
/*以上那句为什么是错的？应该是可以代替下面两行PRINTF的啊，（但实际情况是数字正常显示，NAME显示NULL，指针指错了？）*/
printf( "Num %-4d ",fwd-> num);
printf( "Name %s\n ",fwd-> name);
fwd=fwd-> next;
}
}
void main()
{
void link(struct data *A_head,struct data *B_head);
void ord(struct data *head);
void print(struct data *fwd);
struct data *A_head,*B_head;
printf( "Input infomations of Group A students\n ");
A_head=Crt();
printf( "Input infomations of Group B students\n ");
B_head=Crt();
printf( "Now link Group A and Group B\n ");
link(A_head,B_head);
printf( "Finally,order the new Group\n ");
ord(A_head);
printf( "Now check the result\n ");
print(A_head);
}
[解决办法]
printf( "Num %-4d Name %s\n ",fwd-> num,fwd-> name);
中只有%s有效，%-4d没发挥作用．
[解决办法]
printf( "Num %-4d Name %s\n ",fwd-> num,fwd-> name);
本身没有任何问题.
