【C++】fwrite与fread

fwrite函数

• 函数功能：写数据块
• 函数调用形式：fwrite(buffer, size, count, fp);
• 函数说明：

fread函数

• 函数功能：读数据块
• 函数调用形式：fread(buffer, size, count, fp);
• 函数说明：

/*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;}