바이너리 파일fread, fwrite 함수에 대한 읽기와 쓰기 분류: C 언어 학습...

#define _CRT_SECURE_NO_WARNINGS
#include 
#include 
#define FILENAME "d:/studentInfo"
#define COUNT 5
typedef struct
{
	char name[10];
	short Math;
	short Chinese;
	short WenZong;
}Student;

//        
int ReadInfo();
//          
int WriteInfo(Student  *stu,int count);
//       
int InitInfo(Student *stu,int count);
int main(void)
{
	int resWrite = 0,resRead=0;
	Student stu[COUNT];
	InitInfo(stu, COUNT);
	resWrite = WriteInfo(stu, COUNT);
	if (0 == resWrite)
		printf("    
");
	else
		printf("    
");
	
	ReadInfo();
	system("pause");
	return 0;
}

//       
int InitInfo(Student *stu, int count)
{
	int res = 0;
	if (NULL == stu || count < 0)
	{
		res = -1;
		return res;
	}
	for (size_t i = 0; i < count; i++)
	{
		sprintf((stu+i)->name,"LSX%d",i);
		(stu + i)->Math = i * 5 + 100;
		(stu + i)->Chinese = i * 5 + 80;
		(stu + i)->WenZong = i * 5 + 200;
	}
	return res;
}

//        
int ReadInfo()
{
	int res = 0,res2=0;
	FILE*fp = NULL;
	Student stu[1];
	fp = fopen(FILENAME,"rb");  //      ，     ，   
	if (NULL == fp)
	{
		res = -1;
		return res;
	}
	while (!feof(fp))
	{
		res2= fread(stu,sizeof(Student),1,fp); //fread         ，              ，          
		if (1 == res2)
		{
			printf("%s %10d %10d %10d",stu->name,stu->Math,stu->Chinese,stu->WenZong);
		}
		printf("
");
	}
	if (NULL != fp)
		fclose(fp);
	return res;
}


//          
int WriteInfo(Student * stu,int count)
{
	int res = 0,res2=0;
	FILE*fp = NULL;
	if (NULL == stu || count<0)
	{
		res = -1;
		return res;
	}
	fp = fopen("d:/studentInfo", "wb");  //      ，          
	if (NULL == fp)
	{
		res = -1;
		return res;
	}
	for (size_t i = 0; i < count; i++)
	{
		res2 = fwrite(stu + i, sizeof(Student), 1, fp);// fwrite         ，              ，          
		if (1 != res2)
		{
			res = -1;
			return res;
		}
	}
	if (NULL != fp) //    
		fclose(fp);
	return res;
}