【C++】fwrite與fread

fwrite函數

• 函數功能：寫數據塊
• 函數調用形式：fwrite(buffer, size, count, fp);
• 函數說明：

fread函數

• 函數功能：讀數據塊
• 函數調用形式：fread(buffer, size, count, fp);
• 函數說明：

/*fwriteDemo*/
#include <stdio.h>
#include <iostream>
int main()
{
	FILE *fp;
	char buff[100] = "Hello World.";
	fp = fopen("G:/Loger/VS2010/workspace/fwriteDemo/example.txt","w");
	if (!fp)
	{
		std::cout << "open file failed." << std::endl;
		return 0;
	}
	int len = strlen("Hello World.");
	fwrite(buff,1,len,fp);
	fclose(fp);
	return 1;
}




/*freadDemo*/
#include <iostream>
int main()
{
	FILE *fp;
	char buff[10];
	int len = 0;
	fp = fopen("G:/Loger/VS2010/workspace/fwriteDemo/freadDemo.txt","r");
	if (!fp)
	{
		std::cout << "open file failed." << std::endl;
		return 0;
	}
	len = 10;
	fread(buff,1,len,fp);
	std::cout << buff << std::endl;
	fclose(fp);
	return 1;
}