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第5套题
一、程序填空题
#include <stdio.h>
#include <stdlib.h>
#define N 8
typedef struct list
{ int data;
struct list *next;
} SLIST;
void fun( SLIST *h, int x)
{ SLIST *p, *q, *s;
s=(SLIST *)malloc(sizeof(SLIST));
/**********found**********/
s->data=___1___;
q=h;
p=h->next;
while(p!=NULL && x>p->data) {
/**********found**********/
q=___2___;
p=p->next;
}
s->next=p;
/**********found**********/
q->next=___3___;
}
SLIST *creatlist(int *a)
{ SLIST *h,*p,*q; int i;
h=p=(SLIST *)malloc(sizeof(SLIST));
for(i=0; i<N; i++)
{ q=(SLIST *)malloc(sizeof(SLIST));
q->data=a[i]; p->next=q; p=q;
}
p->next=0;
return h;
}
void outlist(SLIST *h)
{ SLIST *p;
p=h->next;
if (p==NULL) printf("\nThe list is NULL!\n");
else
{ printf("\nHead");
do { printf("->%d",p->data); p=p->next; } while(p!=NULL);
printf("->End\n");
}
}
main()
{ SLIST *head; int x;
int a[N]={11,12,15,18,19,22,25,29};
head=creatlist(a);
printf("\nThe list before inserting:\n"); outlist(head);
printf("\nEnter a number : "); scanf("%d",&x);
fun(head,x);
printf("\nThe list after inserting:\n"); outlist(head);
}
二、程序改错题
#include <stdio.h>
long fun (long num)
{
/************found************/
long k;
do
{ k*=num%10 ;
/************found************/
num\=10 ;
} while(num) ;
return (k) ;
}
main( )
{ long n ;
printf("\nPlease enter a number:") ; scanf("%ld",&n) ;
printf("\n%ld\n",fun(n)) ;
}
三、程序编写题
#include <stdio.h>
float fun ( float *a , int n )
{
}
main()
{ float score[30]={90.5, 72, 80, 61.5, 55}, aver;
void NONO ( );
aver = fun( score, 5 );
printf( "\nAverage score is: %5.2f\n", aver);
NONO ( );
}
void NONO ( )
{/* 本函数用于打开文件,输入数据,调用函数,输出数据,关闭文件。 */
FILE *fp, *wf ;
int i, j ;
float aver, score[5] ;
fp = fopen("K:\\k01\\24010001\\in.dat","r") ;
wf = fopen("K:\\k01\\24010001\\out.dat","w") ;
for(i = 0 ; i < 10 ; i++) {
for(j = 0 ; j < 5 ; j++) fscanf(fp,"%f,",&score[j]) ;
aver = fun(score, 5) ;
fprintf(wf, "%5.2f\n", aver) ;
}
fclose(fp) ;
fclose(wf) ;
}