?? 100-3.txt
字號:
【程序68】
題目:有n個(gè)整數(shù),使其前面各數(shù)順序向后移m個(gè)位置,最后m個(gè)數(shù)變成最前面的m個(gè)數(shù)
1.程序分析:
2.程序源代碼:
main()
{
int number[20],n,m,i;
printf("the total numbers is:");
scanf("%d",&n);
printf("back m:");
scanf("%d",&m);
for(i=0;i<n-1;i++)
scanf("%d,",&number[i]);
scanf("%d",&number[n-1]);
move(number,n,m);
for(i=0;i<n-1;i++)
printf("%d,",number[i]);
printf("%d",number[n-1]);
}
move(array,n,m)
int n,m,array[20];
{
int *p,array_end;
array_end=*(array+n-1);
for(p=array+n-1;p>array;p--)
*p=*(p-1);
*array=array_end;
m--;
if(m>0) move(array,n,m);
}
==============================================================
【程序69】
題目:有n個(gè)人圍成一圈,順序排號。從第一個(gè)人開始報(bào)數(shù)(從1到3報(bào)數(shù)),凡報(bào)到3的人退出圈子,問最后留下的是原來第幾號的那位。
1. 程序分析:
2.程序源代碼:
#define nmax 50
main()
{
int i,k,m,n,num[nmax],*p;
printf("please input the total of numbers:");
scanf("%d",&n);
p=num;
for(i=0;i<n;i++)
*(p+i)=i+1;
i=0;
k=0;
m=0;
while(m<n-1)
{
if(*(p+i)!=0) k++;
if(k==3)
{ *(p+i)=0;
k=0;
m++;
}
i++;
if(i==n) i=0;
}
while(*p==0) p++;
printf("%d is left\n",*p);
}
==============================================================
【程序70】
題目:寫一個(gè)函數(shù),求一個(gè)字符串的長度,在main函數(shù)中輸入字符串,并輸出其長度?! ?1.程序分析:
2.程序源代碼:
main()
{
int len;
char *str[20];
printf("please input a string:\n");
scanf("%s",str);
len=length(str);
printf("the string has %d characters.",len);
}
length(p)
char *p;
{
int n;
n=0;
while(*p!='\0')
{
n++;
p++;
}
return n;
}
【程序71】
題目:編寫input()和output()函數(shù)輸入,輸出5個(gè)學(xué)生的數(shù)據(jù)記錄。
1.程序分析:
2.程序源代碼:
#define N 5
struct student
{ char num[6];
char name[8];
int score[4];
} stu[N];
input(stu)
struct student stu[];
{ int i,j;
for(i=0;i<N;i++)
{ printf("\n please input %d of %d\n",i+1,N);
printf("num: ");
scanf("%s",stu[i].num);
printf("name: ");
scanf("%s",stu[i].name);
for(j=0;j<3;j++)
{ printf("score %d.",j+1);
scanf("%d",&stu[i].score[j]);
}
printf("\n");
}
}
print(stu)
struct student stu[];
{ int i,j;
printf("\nNo. Name Sco1 Sco2 Sco3\n");
for(i=0;i<N;i++)
{ printf("%-6s%-10s",stu[i].num,stu[i].name);
for(j=0;j<3;j++)
printf("%-8d",stu[i].score[j]);
printf("\n");
}
}
main()
{
input();
print();
}
==============================================================
【程序72】
題目:創(chuàng)建一個(gè)鏈表。
1.程序分析:
2.程序源代碼:
/*creat a list*/ #i nclude "stdlib.h"
#i nclude "stdio.h"
struct list
{ int data;
struct list *next;
};
typedef struct list node;
typedef node *link;
void main()
{ link ptr,head;
int num,i;
ptr=(link)malloc(sizeof(node));
ptr=head;
printf("please input 5 numbers==>\n");
for(i=0;i<=4;i++)
{
scanf("%d",&num);
ptr->data=num;
ptr->next=(link)malloc(sizeof(node));
if(i==4) ptr->next=NULL;
else ptr=ptr->next;
}
ptr=head;
while(ptr!=NULL)
{ printf("The value is ==>%d\n",ptr->data);
ptr=ptr->next;
}
}
==============================================================
【程序73】
題目:反向輸出一個(gè)鏈表?! ?1.程序分析:
2.程序源代碼:
/*reverse output a list*/ #i nclude "stdlib.h"
#i nclude "stdio.h"
struct list
{ int data;
struct list *next;
};
typedef struct list node;
typedef node *link;
void main()
{ link ptr,head,tail;
int num,i;
tail=(link)malloc(sizeof(node));
tail->next=NULL;
ptr=tail;
printf("\nplease input 5 data==>\n");
for(i=0;i<=4;i++)
{
scanf("%d",&num);
ptr->data=num;
head=(link)malloc(sizeof(node));
head->next=ptr;
ptr=head;
}
ptr=ptr->next;
while(ptr!=NULL)
{ printf("The value is ==>%d\n",ptr->data);
ptr=ptr->next;
}
}
==============================================================
【程序74】
題目:連接兩個(gè)鏈表。
1.程序分析:
2.程序源代碼:
#i nclude "stdlib.h"
#i nclude "stdio.h"
struct list
{ int data;
struct list *next;
};
typedef struct list node;
typedef node *link;
link delete_node(link pointer,link tmp)
{if (tmp==NULL) /*delete first node*/ return pointer->next;
else
{ if(tmp->next->next==NULL)/*delete last node*/ tmp->next=NULL;
else /*delete the other node*/ tmp->next=tmp->next->next;
return pointer;
}
}
void selection_sort(link pointer,int num)
{ link tmp,btmp;
int i,min;
for(i=0;i<num;i++)
{
tmp=pointer;
min=tmp->data;
btmp=NULL;
while(tmp->next)
{ if(min>tmp->next->data)
{min=tmp->next->data;
btmp=tmp;
}
tmp=tmp->next;
}
printf("\40: %d\n",min);
pointer=delete_node(pointer,btmp);
}
}
link create_list(int array[],int num)
{ link tmp1,tmp2,pointer;
int i;
pointer=(link)malloc(sizeof(node));
pointer->data=array[0];
tmp1=pointer;
for(i=1;i<num;i++)
{ tmp2=(link)malloc(sizeof(node));
tmp2->next=NULL;
tmp2->data=array[i];
tmp1->next=tmp2;
tmp1=tmp1->next;
}
return pointer;
}
link concatenate(link pointer1,link pointer2)
{ link tmp;
tmp=pointer1;
while(tmp->next)
tmp=tmp->next;
tmp->next=pointer2;
return pointer1;
}
void main(void)
{ int arr1[]={3,12,8,9,11};
link ptr;
ptr=create_list(arr1,5);
selection_sort(ptr,5);
}
【程序75】
題目:放松一下,算一道簡單的題目。
1.程序分析:
2.程序源代碼:
main()
{
int i,n;
for(i=1;i<5;i++)
{ n=0;
if(i!=1)
n=n+1;
if(i==3)
n=n+1;
if(i==4)
n=n+1;
if(i!=4)
n=n+1;
if(n==3)
printf("zhu hao shi de shi:%c",64+i);
}
}
==============================================================
【程序76】
題目:編寫一個(gè)函數(shù),輸入n為偶數(shù)時(shí),調(diào)用函數(shù)求1/2+1/4+...+1/n,當(dāng)輸入n為奇數(shù)時(shí),調(diào)用函數(shù)1/1+1/3+...+1/n(利用指針函數(shù))
1.程序分析:
2.程序源代碼:
main()
#i nclude "stdio.h"
main()
{
float peven(),podd(),dcall();
float sum;
int n;
while (1)
{
scanf("%d",&n);
if(n>1)
break;
}
if(n%2==0)
{
printf("Even=");
sum=dcall(peven,n);
}
else
{
printf("Odd=");
sum=dcall(podd,n);
}
printf("%f",sum);
}
float peven(int n)
{
float s;
int i;
s=1;
for(i=2;i<=n;i+=2)
s+=1/(float)i;
return(s);
}
float podd(n)
int n;
{
float s;
int i;
s=0;
for(i=1;i<=n;i+=2)
s+=1/(float)i;
return(s);
}
float dcall(fp,n)
float (*fp)();
int n;
{
float s;
s=(*fp)(n);
return(s);
}
==============================================================
【程序77】
題目:填空練習(xí)(指向指針的指針)
1.程序分析:
2.程序源代碼:
main()
{ char *s[]={"man","woman","girl","boy","sister"};
char **q;
int k;
for(k=0;k<5;k++)
{ ;/*這里填寫什么語句*/ printf("%s\n",*q);
}
}
==============================================================
【程序78】
題目:找到年齡最大的人,并輸出。請找出程序中有什么問題。
1.程序分析:
2.程序源代碼:
#define N 4
#i nclude "stdio.h"
static struct man
{ char name[20];
int age;
} person[N]={"li",18,"wang",19,"zhang",20,"sun",22};
main()
{struct man *q,*p;
int i,m=0;
p=person;
for (i=0;i<N;i++)
{if(m<p->age)
q=p++;
m=q->age;}
printf("%s,%d",(*q).name,(*q).age);
}
==============================================================
【程序79】
題目:字符串排序。
1.程序分析:
2.程序源代碼:
main()
{
char *str1[20],*str2[20],*str3[20];
char swap();
printf("please input three strings\n");
scanf("%s",str1);
scanf("%s",str2);
scanf("%s",str3);
if(strcmp(str1,str2)>0) swap(str1,str2);
if(strcmp(str1,str3)>0) swap(str1,str3);
if(strcmp(str2,str3)>0) swap(str2,str3);
printf("after being sorted\n");
printf("%s\n%s\n%s\n",str1,str2,str3);
}
char swap(p1,p2)
char *p1,*p2;
{
char *p[20];
strcpy(p,p1);strcpy(p1,p2);strcpy(p2,p);
}
==============================================================
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