文件（作业）

#include <stdio.h>
#include<Stdlib.h>
#define N 30
typedef struct date
{
	int year;
	int month;
	int day;
 } DATE;
 typedef struct student
 {
 	long studentID;//学号
	char studentName[10];
	char studentSex[2];

 }STUDENT;
 typedef struct award
 {
 		long studentID;//学号
 		char honor[30]; 
  }AWARD;
  typedef struct result
  {
  	long studentID;//学号
	char studentName[10];
	char studentSex[2];
	char honor[30];
  }RESULT;
 void InputInformation(STUDENT stu[],int n)//从键盘输入n个学生的信息到结构体数组stu中 
 {
 	int i,j;
	 for(i=0;i<n;i++)
	 {
	 	printf("Input record %d:\n",i+1);
	 	scanf("%ld",&stu[i].studentID);
	 	scanf("%s",&stu[i].studentName);
	 	scanf(" %s",&stu[i].studentSex);
	 }
 }
 void InputAward(AWARD awa[],int n)//从键盘输入n个学生的奖励信息到数组awa中 
 {
 	int i,j;
	 for(i=0;i<n;i++)
	 {
	 	printf("Input award %d:\n",i+1);
	 	scanf("%ld",&awa[i].studentID);
	 	scanf("%s",&awa[i].honor);
    }
}
void WritetoFile1(STUDENT stu[],int n)//文件student.txt 
 {
 	FILE *fp;
 	if((fp=fopen("student.txt","w"))==NULL) //以写方式打开文件
	 {
	 printf("Failure to open student.txt!\n") ;
	 exit(0);
    }
    fwrite(stu,sizeof(STUDENT),n,fp);//按数据块写文件
	fclose(fp); 
}
 void WritetoFile2(AWARD awa[],int n)//文件award.txt
 {
 	FILE *fp;
 	if((fp=fopen("award.txt","w"))==NULL) //以写方式打开文件
	 {
	 printf("Failure to open award.txt!\n") ;
	 exit(0);
    }
    fwrite(awa,sizeof(AWARD),n,fp);//按数据块写文件
	fclose(fp); 
 }
 int ReadfromFile1(STUDENT stu[])//从文件中读取学生的信息到结构体数组stu中并返回学生数 
 {
 	FILE *fp;
 	int i;
 	if((fp=fopen("student.txt","r"))==NULL) //以读方式打开文件
 	{
	 printf("Failure to open student.txt!\n") ;
     exit(0);
	} 
	for(i=0;!feof(fp);i++)
	{
		fread(&stu[i],sizeof(STUDENT),1,fp); //按数据块读文件 
	}
	fclose(fp);
	printf("Total students is %d.\n",i-1);
	return i-1;
 }
  int ReadfromFile2(AWARD awa[])//从文件中读取学生的奖励信息到结构体数组awa中并返回学生数 
 {
 	FILE *fp;
 	int i;
 	if((fp=fopen("award.txt","r"))==NULL) //以读方式打开文件
 	{
	 printf("Failure to open award.txt!\n") ;
     exit(0);
	} 
	for(i=0;!feof(fp);i++)
	{
		fread(&awa[i],sizeof(AWARD),1,fp); //按数据块读文件 
	}
	fclose(fp);
	printf("Total awards is %d.\n",i-1);
	return i-1;
 }
 
 void PrintfResult(STUDENT stu[],AWARD awa[],int n) 
 {
 	int i,j;
 	for(i=0;i<n;i++)
	{
	 	printf("%10ld %8s %3s  %10s\n",stu[i].studentID,stu[i].studentName,stu[i].studentSex,awa[i].honor);
	} 
} 

void Research(STUDENT stu[],AWARD awa[],int ID)
{
	int i=0,j=0;
	while(stu[i].studentID!=ID)   i++;
	while(awa[j].studentID!=ID)	  j++;
	printf("ID为%d的学生信息为：",ID); 
	printf("%10ld %8s %3s  %10s\n",stu[i].studentID,stu[i].studentName,stu[i].studentSex,awa[j].honor);
}

int main()
{
	STUDENT stu[N];
	AWARD   awa[N];
	RESULT  res[N];
	int n,ID;
	printf("学生人数n："); 
	scanf("%d",&n);
	printf("输入学号 姓名 性别 ：\n");
	InputInformation(stu,n);
	printf("输入奖励信息：\n") ;
	InputAward(awa,n);//从键盘输入n个学生的奖励信息到数组awa中 
	WritetoFile1(stu,n);
	WritetoFile2(awa,n);
//	n=ReadfromFile1(stu);
//	PrintfResult(stu,awa,n);
	printf("输入搜索的学号：");
	scanf("%d",&ID) ;
	Research(stu,awa,ID);
	return 0; 
}

标签：文件,typedef,studentID,struct,int,作业,long,char
来源： https://blog.csdn.net/weilaikeqiqi/article/details/121218473