# include <stdio.h>
struct Data
{
    int num ;
    struct Data * next ;
};
void main()
{
    int i , shu ,j ;
    struct Data number[10] ;
    struct Data * head , * p ;
    for( i = 0 ; i < 10 ; i++ )
    {
        number[i].num = i + 1 ;
        if( 9 == i )  number[9].next = NULL ;
        number[i].next = & number[i + 1];
    }
    head = number ;            
    p = head ;
    do
    {
        printf(" %d " , p->num );
        p = p -> next ;            
    }while( p != NULL ) ;
    printf("\n");
}

# include <stdio.h>
struct Data
{
    int num ;
    struct Data * next ;
};
void main()
{
    int i , shu ,j ;
    struct Data number[10] ;
    struct Data * head , * p ;
    for( i = 0 ; i < 10 ; i++ )
    {
        number[i].num = i + 1 ;
        if( 9 == i )  
         number[9].next = NULL ;
        else
        number[i].next = & number[i + 1];
    }
    head = number ;              
    p = head ;
    do
    {
        printf(" %d " , p->num );
        p = p -> next ;              
    }while( p != NULL ) ;
    printf("\n");
}

用FOR 语句不就OK吗？
# include <stdio.h>  
void main ()
{    int i;
    for(i=1;i<=10;i++)
    {
    printf("%d\t",i);
}
}

# include <stdio.h>
struct Data
{
    int num ;
    struct Data * next ;
};
void main()
{
    int i , shu ,j ;
    struct Data number[10] ;
    struct Data * head , * p ;
    for( i = 0 ; i < 10 ; i++ )
    {
        number[i].num = i + 1 ;
        number[i].next = & number[i + 1];
        if( 9 == i )  number[9].next = NULL ;
         
    }
    head = number ;              
    p = head ;
    do
    {
        printf(" %d " , p->num );
        p = p -> next ;              
    }while( p != NULL ) ;
    printf("\n");
}
这样你先执行number[i].next = & number[i + 1]; 再做判断就可以了