1、一个学生的信息是：姓名，学号，性别，年龄等信息，用一个链表，把这些学生信息连在一起， 给出一个age, 在些链表中删除学生年龄等于age的学生信息。
#include "stdio.h"
#include "conio.h"
struct stu{
char name[20];
char sex;
int no;
int age;
struct stu * next;
}*linklist;
struct stu *creatlist(int n)
{
int i;
//h为头结点，p为前一结点，s为当前结点
struct stu *h,*p,*s;
h = (struct stu *)malloc(sizeof(struct stu));
h->next = NULL;
p=h;
for(i=0;i<n;i++)
{
s = (struct stu *)malloc(sizeof(struct stu));
p->next = s;
printf("Please input the information of the student: name sex no age \n");
scanf("%s %c %d %d",s->name,&s->sex,&s->no,&s->age);
s->next = NULL;
p = s;
}
printf("Create successful!");
return(h);
}
void deletelist(struct stu *s,int a)
{
struct stu *p;
while(s->age!=a)
{
p = s;
s = s->next;
}
if(s==NULL)
printf("The record is not exist.");
else
{
p->next = s->next;
printf("Delete successful!");
}
}
void display(struct stu *s)
{
s = s->next;
while(s!=NULL)
{
printf("%s %c %d %d\n",s->name,s->sex,s->no,s->age);
s = s->next;
}
}
int main()
{
struct stu *s;
int n,age;
printf("Please input the length of seqlist:\n");
scanf("%d",&n);
s = creatlist(n);
display(s);
printf("Please input the age:\n");
scanf("%d",&age);
deletelist(s,age);
display(s);
return 0;
}
2、实现一个函数，把一个字符串中的字符从小写转为大写。
#include "stdio.h"
#include "conio.h"
void uppers(char *s,char *us)
{
for(;*s!='\0';s++,us++)
{
if(*s>='a'&&*s<='z')
*us = *s-32;
else
*us = *s;
}
*us = '\0';
}
int main()
{
char *s,*us;
char ss[20];
printf("Please input a string:\n");
scanf("%s",ss);
s = ss;
uppers(s,us);
printf("The result is:\n%s\n",us);
getch();
}