c语言100行代码大全(c语言100行代码)

http://www.itjxue.com  2023-04-02 10:44  来源:未知  点击次数: 

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);

}

高分悬赏求一个C语言100行左右的程序代码,希望有详细的注释,在线等!

#include errno.h

#include unistd.h

#include sys/ioctl.h

#include sys/types.h

#include sys/mman.h

#include sys/stat.h

#include fcntl.h

#include linux/fb.h

#include "xorg-server.h"

#include "xf86.h"

#include "xf86cmap.h"

#include xf86drm.h

#include "xf86xv.h"

#include "xf86Crtc.h"

#include "micmap.h"

#include "mali_def.h"

#include "mali_fbdev.h"

#include "mali_exa.h"

#include "mali_dri.h"

#include "mali_lcd.h"

#include "compat-api.h"

#define MALI_VERSION 4000

#define MALI_NAME "MALI"

#define MALI_DRIVER_NAME "mali"

#define PAGE_MASK (~(getpagesize() - 1))

static const OptionInfoRec *MaliAvailableOptions(int chipid, int busid);

static void MaliIdentify(int flags);

static Bool MaliProbe(DriverPtr drv, int flags);

static Bool MaliPreInit(ScrnInfoPtr pScrn, int flags);

static Bool MaliScreenInit(SCREEN_INIT_ARGS_DECL);

static Bool MaliCloseScreen(CLOSE_SCREEN_ARGS_DECL);

static Bool MaliHWSwitchMode(SWITCH_MODE_ARGS_DECL);

static void MaliHWAdjustFrame(ADJUST_FRAME_ARGS_DECL);

static Bool MaliHWEnterVT(VT_FUNC_ARGS_DECL);

static void MaliHWLeaveVT(VT_FUNC_ARGS_DECL);

static ModeStatus MaliHWValidMode(SCRN_ARG_TYPE arg, DisplayModePtr mode, Bool verbose, int flags);

static int pix24bpp = 0;

static int malihwPrivateIndex = -1;

static int global_drm_fd = -1;

_X_EXPORT DriverRec MALI =

{

MALI_VERSION,

MALI_DRIVER_NAME,

MaliIdentify,

MaliProbe,

MaliAvailableOptions,

NULL,

0,

NULL,

NULL,

NULL,

};

/* Supported "chipsets" */

static SymTabRec MaliChipsets[] =

{

{ 0, "mali" },

{ -1, NULL }

};

/* Supported options */

typedef enum

{

OPTION_DRI2,

OPTION_DRI2_PAGE_FLIP,

OPTION_DRI2_WAIT_VSYNC,

OPTION_UMP_CACHED,

OPTION_UMP_LOCK,

} FBDevOpts;

static const OptionInfoRec MaliOptions[] =

{

{ OPTION_DRI2, "DRI2", OPTV_BOOLEAN, {0}, TRUE },

{ OPTION_DRI2_PAGE_FLIP, "DRI2_PAGE_FLIP", OPTV_BOOLEAN, {0}, FALSE },

{ OPTION_DRI2_WAIT_VSYNC, "DRI2_WAIT_VSYNC", OPTV_BOOLEAN, {0}, FALSE },

{ OPTION_UMP_CACHED, "UMP_CACHED", OPTV_BOOLEAN, {0}, FALSE },

{ OPTION_UMP_LOCK, "UMP_LOCK", OPTV_BOOLEAN, {0}, FALSE },

{ -1, NULL, OPTV_NONE, {0}, FALSE }

};

#ifdef XFree86LOADER

#ifndef PACKAGE_VERSION_MAJOR

#define PACKAGE_VERSION_MAJOR 0

#endif

#ifndef PACKAGE_VERSION_MINOR

#define PACKAGE_VERSION_MINOR 1

#endif

#ifndef PACKAGE_VERSION_PATCHLEVEL

#define PACKAGE_VERSION_PATCHLEVEL 1

#endif

MODULESETUPPROTO(MaliSetup);

static XF86ModuleVersionInfo MaliVersRec =

{

"mali",

MODULEVENDORSTRING,

MODINFOSTRING1,

MODINFOSTRING2,

XORG_VERSION_CURRENT,

PACKAGE_VERSION_MAJOR, PACKAGE_VERSION_MINOR, PACKAGE_VERSION_PATCHLEVEL,

ABI_CLASS_VIDEODRV,

ABI_VIDEODRV_VERSION,

NULL,

{0, 0, 0, 0}

};

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();

}

c语言必背100代码有哪些?

/*输出9*9口诀。共9行9列,i控制行,j控制列。*/

#include "stdio.h"

main()

{int i,j,result;

for (i=1;i10;i++)

{ for(j=1;j10;j++)

{

result=i*j;

printf("%d*%d=%-3d",i,j,result);/*-3d表示左对齐,占3位*/

}

printf("\n");/*每一行后换行*/

}

}

扩展资料:

C语言的字符串其实就是以'\0'字符结尾的char型数组,使用字符型并不需要引用库,但是使用字符串就需要C标准库里面的一些用于对字符串进行操作的函数。它们不同于字符数组。使用这些函数需要引用头文件string.h。

文件输入/输出

在C语言中,输入和输出是经由标准库中的一组函数来实现的。在ANSI C中,这些函数被定义在头文件stdio.h;中。

标准输入/输出

有三个标准输入/输出是标准I/O库预先定义的:

stdin标准输入

stdout标准输出

stderr输入输出错误

参考资料来源:百度百科-c语言

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