初学C语言100个代码大全(c语言基础知识入门代码)
初学编程100个代码（ C语言编程）？
、学代码：前提是你的复有?个?较系统的学习.认真完成每?个课程中的案例.
2、读代码：分制两步?：前期能读懂??写的代码.2113 后期能读懂他?写的代码和?致的知道底层的某些源码的含义.多去5261看开发?档(开发?档建议使?官?提供的4102英?版、不要使?中???害??)
c语言100行简单一点的代码
登录幼儿园200个小朋友的数据：姓名、性别、年龄、身高、体重、出生日期，分别按年龄排序后输出。
#includestdio.h
#define N 200
struct child
{
char name[10];
char sex[3];
int age;
int height;
float weight;
struct {
int year;
int month;
int day;
}bdate;
}ch[N];
void input()
{
int i;
for(i=0;iN;i++)
{
printf("\n请输入第%d名小朋友信息：\n",i+1);
printf("姓名：");
scanf("%s",ch[i].name);
printf("性别：");
scanf("%s",ch[i].sex);
printf("年龄：");
scanf("%d",ch[i].age);
printf("身高：");
scanf("%d",ch[i].height);
printf("体重：");
scanf("%f",ch[i].weight);
printf("出生日期[YYYY-MM-DD]：");
scanf("%d-%d-%d",ch[i].bdate.year,ch[i].bdate.month,ch[i].bdate.day);
}
}
void sort()
{
struct child ct;
int i,j;
for(i=0;iN-1;i++)
for(j=0;jN-i-1;j++)
if(ch[j].heightch[j+1].height)
{
ct=ch[j];
ch[j]=ch[j+1];
ch[j+1]=ct;
}
}
void output()
{
int i;
printf("\n\t幼儿园小朋友一览（依身高排序）\n");
printf("===================================================\n");
printf(" 姓名 性别 年龄 身高 体重 出生日期 \n");
printf("===================================================\n");
for(i=0;iN;i++)
printf(" %-8s %-2s %2d %d %3.1f %d.%d.%d\n",ch[i].name,ch[i].sex,ch[i].age,ch[i].height,ch[i].weight,ch[i].bdate.year,ch[i].bdate.month,ch[i].bdate.day);
}
void main()
{
input();
sort();
output();
}
跪求100行左右的c语言简单代码，大一水平就行，什么类型都可以。
//学生成绩管理系统C代码
/*头文件*/
#include?stdio.h
#includedos.h
#includestdlib.h?/*其它说明*/
#includestring.h?/*字符串函数*/
#includemem.h?/*内存操作函数*/
#includectype.h?/*字符操作函数*/
#includealloc.h?/*动态地址分配函数*/
#define?LEN?sizeof(STUDENT)
typedef?struct?stu?/*定义结构体数组用于缓存数据*/
{
char?num[6];
char?name[5];
int?score[3];
int?sum;
float?average;
int?order;
struct?stu?*next;
}STUDENT;
/*函数原型*/
STUDENT?*init();?/*初始化函数*/
int?menu_select();?/*菜单函数*/
STUDENT?*create();?/*创建链表*/
void?print(STUDENT?*head);?/*?显示全部记录*/
void?search(STUDENT?*head);?/*查找记录*/
STUDENT?*delete(STUDENT?*head);?/*删除记录*/
STUDENT?*sort(STUDENT?*head);?/*排序*/
STUDENT?*insert(STUDENT?*head,STUDENT?*newnode);?/*插入记录*/
void?save(STUDENT?*head);?/*保存文件*/
STUDENT?*load();?/*读文件*/
/*主函数界面*/
main()
{
STUDENT?*head,newnode;
head=init();?/*链表初始化,使head的值为NULL*/
for(;;)?/*循环无限次*/
{
switch(menu_select())?
{
case?1:head=create();break;
case?2:print(head);break;
case?3:search(head);break;
case?4:head=delete(head);break;
case?5:head=sort(head);break;
case?6:head=insert(head,newnode);break;?/*newnode表示返回地址*/
case?7:save(head);break;
case?8:head=load();?break;
case?9:exit(0);?/*如菜单返回值为9则程序结束*/
}
}
}
/*初始化函数*/
STUDENT?*init()
{
return?NULL;?/*返回空指针*/
}
/*菜单选择函数*/
menu_select()
{
int?n;
struct?date?d;?/*定义时间结构体*/
getdate(d);?/*读取系统日期并把它放到结构体d中*/
printf("press?any?key?to?enter?the?menu......");?/*按任一键进入主菜单*/
getch();?/*从键盘读取一个字符,但不显示于屏幕*/
clrscr();?/*清屏*/
printf("********************************************************************************\n");
printf("\t\t?Welcome?to\n");
printf("\n\t\t?The?student?score?manage?system\n");
printf("*************************************MENU***************************************\n");
printf("\t\t\t1.?Enter?the?record\n");?/*输入学生成绩记录*/
printf("\t\t\t2.?Print?the?record\n");?/*显示*/
printf("\t\t\t3.?Search?record?on?name\n");?/*寻找*/
printf("\t\t\t4.?Delete?a?record\n");?/*删除*/
printf("\t\t\t5.?Sort?to?make?new?a?file\n");?/*排序*/
printf("\t\t\t6.?Insert?record?to?list\n");?/*插入*/
printf("\t\t\t7.?Save?the?file\n");?/*保存*/
printf("\t\t\t8.?Load?the?file\n");?/*读取*/
printf("\t\t\t9.?Quit\n");?/*退出*/
printf("\n\t\t?Made?by?Hu?Haihong.\n");
printf("********************************************************************************\n");
printf("\t\t\t\t%d\\%d\\%d\n",d.da_year,d.da_mon,d.da_day);?/*显示当前系统日期*/
do{
?printf("\n\t\t\tEnter?your?choice(1~9):");?
?scanf("%d",n);
?}while(n1||n9);?/*如果选择项不在1~9之间则重输*/
?return(n);?/*返回选择项，主函数根据该数调用相应的函数*/
}
/*输入函数*/
STUDENT?*create()
{
int?i,s;
STUDENT?*head=NULL,*p;?/*?定义函数.此函数带回一个指向链表头的指针*/
clrscr();
for(;;)
?{p=(STUDENT?*)malloc(LEN);?/*开辟一个新的单元*/
?if(!p)?/*如果指针p为空*/
?{printf("\nOut?of?memory.");?/*输出内存溢出*/
?return?(head);?/*返回头指针,下同*/
?}
?printf("Enter?the?num(0:list?end):");?
?scanf("%s",p-num);
?if(p-num[0]=='0')?break;?/*如果学号首字符为0则结束输入*/
?printf("Enter?the?name:");
?scanf("%s",p-name);
?printf("Please?enter?the?%d?scores\n",3);?/*提示开始输入成绩*/
?s=0;?/*计算每个学生的总分，初值为0*/
?for(i=0;i3;i++)?/*3门课程循环3次*/
?{
?do{
?printf("score%d:",i+1);
?scanf("%d",p-score[i]);
?if(p-score[i]0?||?p-score[i]100)?/*确保成绩在0~100之间*/
?printf("Data?error,please?enter?again.\n");
?}while(p-score[i]0?||?p-score[i]100);
?s=s+p-score[i];?/*累加各门成绩*/
?}
?p-sum=s;?/*将总分保存*/
?p-average=(float)s/3;?/*先用强制类型转换将s转换成float型,再求平均值*/
?p-order=0;?/*未排序前此值为0*/
?p-next=head;?/*将头结点做为新输入结点的后继结点*/
?head=p;?/*新输入结点为新的头结点*/
?}
?return(head);?
}
/*?显示全部记录函数*/
void?print(STUDENT?*head)
{
int?i=0;?/*?统计记录条数*/
STUDENT?*p;?/*移动指针*/
clrscr();
p=head;?/*初值为头指针*/
printf("\n************************************STUDENT************************************\n");
printf("-------------------------------------------------------------------------------\n");
printf("|?Rec?|?Num?|?Name?|?Sc1?|?Sc2?|?Sc3?|?Sum?|?Ave?|?Order?|\n");
printf("-------------------------------------------------------------------------------\n");
while(p!=NULL)
?{
?i++;
?printf("|?%3d?|?%4s?|?%-4s?|?%3d?|?%3d?|?%3d?|?%3d?|?%4.2f?|?%-5d|\n",?
?i,?p-num,p-name,p-score[0],p-score[1],p-score[2],p-sum,p-average,p-order);
?p=p-next;
?}
printf("-------------------------------------------------------------------------------\n");
printf("**************************************END**************************************\n");
}
/*查找记录函数*/
void?search(STUDENT?*head)
{
STUDENT?*p;?/*?移动指针*/
char?s[5];?/*存放姓名用的字符数组*/
clrscr();
printf("Please?enter?name?for?searching.\n");
scanf("%s",s);
p=head;?/*将头指针赋给p*/
while(strcmp(p-name,s)??p?!=?NULL)?/*当记录的姓名不是要找的，或指针不为空时*/
?p=p-next;?/*移动指针，指向下一结点*/
?if(p!=NULL)?/*如果指针不为空*/
?{printf("\n*************************************FOUND************************************\n");
?printf("-------------------------------------------------------------------------------\n");
?printf("|?Num?|?Name?|?sc1?|?sc2?|?sc3?|?Sum?|?Ave?|?Order?|\n");
?printf("-------------------------------------------------------------------------------\n");
?printf("|?%4s?|?%4s?|?%3d?|?%3d?|?%3d?|?%3d?|?%4.2f?|?%-5d|\n",
?p-num,p-name,p-score[0],p-score[1],p-score[2],p-sum,p-average,p-order);
?printf("-------------------------------------------------------------------------------\n");
?printf("***************************************END**************************************\n");
?}
?else
?printf("\nThere?is?no?num?%s?student?on?the?list.\n",s);?/*显示没有该学生*/
}
/*删除记录函数*/
STUDENT?*delete(STUDENT?*head)
{int?n;
STUDENT?*p1,*p2;?/*p1为查找到要删除的结点指针，p2为其前驱指针*/
char?c,s[6];?/*s[6]用来存放学号,c用来输入字母*/
clrscr();
printf("Please?enter?the?deleted?num:?");
scanf("%s",s);
p1=p2=head;?/*给p1和p2赋初值头指针*/
while(strcmp(p1-num,s)??p1?!=?NULL)?/*当记录的学号不是要找的，或指针不为空时*/
?{p2=p1;?/*将p1指针值赋给p2作为p1的前驱指针*/
?p1=p1-next;?/*将p1指针指向下一条记录*/
?}
if(strcmp(p1-num,s)==0)?/*学号找到了*/
?{printf("**************************************FOUND************************************\n");
?printf("-------------------------------------------------------------------------------\n");
?printf("|?Num?|?Name?|?sc1?|?sc2?|?sc3?|?Sum?|?Ave?|?Order?|\n");
?printf("-------------------------------------------------------------------------------\n");
?printf("|?%4s?|?%4s?|?%3d?|?%3d?|?%3d?|?%3d?|?%4.2f?|?%-5d|\n",
?p1-num,p1-name,p1-score[0],p1-score[1],p1-score[2],p1-sum,p1-average,p1-order);
?printf("-------------------------------------------------------------------------------\n");
?printf("***************************************END**************************************\n");
?printf("Are?you?sure?to?delete?the?student?Y/N??");?/*提示是否要删除,输入Y删除,N则退出*/
?for(;;)
?{scanf("%c",c);
?if(c=='n'||c=='N')?break;?/*如果不删除,则跳出本循环*/
?if(c=='y'||c=='Y')
?{
?if(p1==head)?/*若p1==head，说明被删结点是首结点*/
?head=p1-next;?/*把第二个结点地址赋予head*/
?else
?p2-next=p1-next;?/*否则将一下结点地址赋给前一结点地址*/
?n=n-1;
?printf("\nNum?%s?student?have?been?deleted.\n",s);
?printf("Don't?forget?to?save.\n");break;?/*删除后就跳出循环*/
?}
?}
?}
?else
?printf("\nThere?is?no?num?%s?student?on?the?list.\n",s);?/*找不到该结点*/
return(head);
}
/*排序函数*/
STUDENT?*sort(STUDENT?*head)
{int?i=0;?/*保存名次*/
STUDENT?*p1,*p2,*t,*temp;?/*定义临时指针*/
temp=head-next;?/*将原表的头指针所指的下一个结点作头指针*/
head-next=NULL;?/*第一个结点为新表的头结点*/
while(temp!=NULL)?/*当原表不为空时，进行排序*/
?{
?t=temp;?/*取原表的头结点*/
?temp=temp-next;?/*原表头结点指针后移*/
?p1=head;?/*设定移动指针p1，从头指针开始*/
?p2=head;?/*设定移动指针p2做为p1的前驱，初值为头指针*/
?while(t-averagep1-averagep1!=NULL)?/*作成绩平均分比较*/
?{
?p2=p1;?/*待排序点值小，则新表指针后移*/
?p1=p1-next;
?}
?if(p1==p2)?/*p1==p2，说明待排序点值大，应排在首位*/
?{
?t-next=p1;?/*待排序点的后继为p*/
?head=t;?/*新头结点为待排序点*/
?}
?else?/*待排序点应插入在中间某个位置p2和p1之间，如p为空则是尾部*/
?{
?t-next=p1;?/*t的后继是p1*/
?p2-next=t;?/*p2的后继是t*/
?}
?}
p1=head;?/*已排好序的头指针赋给p1，准备填写名次*/
while(p1!=NULL)?/*当p1不为空时，进行下列操作*/
?{
?i++;?/*结点序号*/
?p1-order=i;?/*将结点序号赋值给名次*/
?p1=p1-next;?/*指针后移*/
?}
printf("Sorting?is?sucessful.\n");?/*排序成功*/
return?(head);
}
/*插入记录函数*/
STUDENT?*insert(STUDENT?*head,STUDENT?*newnode)
{STUDENT?*p0,*p1,*p2;
int?n,sum1,i;
p1=head;?/*使p1指向第一个结点*/
p0=newnode;?/*p0指向要插入的结点*/
printf("\nPlease?enter?a?newnode?record.\n");?/*提示输入记录信息*/
printf("Enter?the?num:");
scanf("%s",newnode-num);
printf("Enter?the?name:");
scanf("%s",newnode-name);
printf("Please?enter?the?%d?scores.\n",3);
sum1=0;?/*保存新记录的总分，初值为0*/
for(i=0;i3;i++)
?{
?do{
?printf("score%d:",i+1);
?scanf("%d",newnode-score[i]);
?if(newnode-score[i]100||newnode-score[i]0)
?printf("Data?error,please?enter?again.\n");
?}while(newnode-score[i]100||newnode-score[i]0);
?sum1=sum1+newnode-score[i];?/*累加各门成绩*/
?}
newnode-sum=sum1;?/*将总分存入新记录中*/
newnode-average=(float)sum1/3;
newnode-order=0;
if(head==NULL)?/*原来的链表是空表*/
?{head=p0;p0-next=NULL;}?/*使p0指向的结点作为头结点*/
else
?{while((p0-averagep1-average)(p1-next!=NULL))
?{p2=p1;?/*使p2指向刚才p1指向的结点*/
?p1=p1-next;?/*p1后移一个结点*/
?}
?if(p0-average=p1-average)
?{if(head==p1)head=p0;?/*插到原来第一个结点之前*/
?else?p2-next=p0;?/*插到p2指向的结点之后*/
?p0-next=p1;}
?else
?{p1-next=p0;p0-next=NULL;}?/*插到最后的结点之后*/
?}
n=n+1;?/*结点数加1*/
head=sort(head);?/*调用排序的函数,将学生成绩重新排序*/
printf("\nStudent?%s?have?been?inserted.\n",newnode-name);?
printf("Don't?forget?to?save?the?newnode?file.\n");
return(head);
}
/*保存数据到文件函数*/
void?save(STUDENT?*head)
{FILE?*fp;?/*定义指向文件的指针*/
STUDENT?*p;?/*?定义移动指针*/
char?outfile[10];
printf("Enter?outfile?name,for?example?c:\\score\n");
scanf("%s",outfile);
if((fp=fopen(outfile,"wb"))==NULL)?/*为输出打开一个二进制文件,为只写方式*/
?{
?printf("Cannot?open?the?file\n");
?return;?/*若打不开则返回菜单*/
?}
printf("\nSaving?the?file......\n");
p=head;?/*移动指针从头指针开始*/
while(p!=NULL)?/*如p不为空*/
?{
?fwrite(p,LEN,1,fp);?/*写入一条记录*/
?p=p-next;?/*指针后移*/
?}
fclose(fp);?/*关闭文件*/
printf("Save?the?file?successfully!\n");
}
/*?从文件读数据函数*/
STUDENT?*load()
{STUDENT?*p1,*p2,*head=NULL;?/*定义记录指针变量*/
FILE?*fp;?/*?定义指向文件的指针*/
char?infile[10];
printf("Enter?infile?name,for?example?c:\\score\n");
scanf("%s",infile);
if((fp=fopen(infile,"rb"))==NULL)?/*打开一个二进制文件，为只读方式*/
?{
?printf("Can?not?open?the?file.\n");
?return(head);
?}
printf("\nLoading?the?file!\n");
p1=(STUDENT?*)malloc(LEN);?/*开辟一个新单元*/
if(!p1)
?{
?printf("Out?of?memory!\n");
?return(head);
?}
head=p1;?/*申请到空间，将其作为头指针*/
while(!feof(fp))?/*循环读数据直到文件尾结束*/
?{
?if(fread(p1,LEN,1,fp)!=1)?break;?/*如果没读到数据，跳出循环*/
?p1-next=(STUDENT?*)malloc(LEN);?/*为下一个结点开辟空间*/
?if(!p1-next)
?{
?printf("Out?of?memory!\n");
?return?(head);
?}
p2=p1;?/*使p2指向刚才p1指向的结点*/
p1=p1-next;?/*指针后移，新读入数据链到当前表尾*/
?}
p2-next=NULL;?/*最后一个结点的后继指针为空*/
fclose(fp);
printf("You?have?success?to?read?data?from?the?file!\n");
return?(head);
}