rfile.seekg(0,std::ios::beg); std::cout<<"length:"<<length<<std::endl; //allocate memory: buffer=newchar[length]; //read data as a block: rfile.read(buffer,length); rfile.close(); //write to outfile std::fstream wfile("new.txt",std::fstream::out|std::fstream::binary); ...
26//read data as a block: 27rfile.read(buffer,length); 28rfile.close(); 29 30//write to outfile 31std::fstream wfile("new.txt",std::fstream::out|std::fstream::binary); 32wfile.write(buffer,length); 33 34//delete buffer 35delete[] buffer; 36 37//close rfile wfile 38rfile.c...
fstream fpf(filePath, ios::binary); unsigned short* receive_arr = nullptr; try { receive_arr = new unsigned short(1024); } catch (bad_alloc) { cerr << "bad_alloc in" << __LINE__ << endl; } fpf.seekg(sizeof(char) * 98,ios_base::beg); fpf.read((char*)receive_arr,2048);...
跟上面的操作流程类似. 唯一不同在于使用输入模式标志ios::in, 使用read()方法. // Sample for C++ File I/O binary file read 1:voidread_from_binary_file() 2:{ 3:WebSites p_Data; 4:fstream binary_file("c:\\test.dat",ios::binary|ios::in); 5:binary_file.read(reinterpret_cast<char*>...
fstream binary_file("1.dat",ios::out|ios::binary); binary_file.write(reinterpret_cast<char *>(&web),sizeof(website)); binary_file.close; ifstream fin("1.dat",ios::binary); fin.read(reinterpret_cast<char *>(&getweb),sizeof(website)); ...
#include<iostream>#include<cmath>#include<fstream>usingnamespacestd;intmain(){/* 1202 角度光子域数据处理 */// 打开文件ifstreaminfile;infile.open("./FileName.raw",ios::in|ios::binary);if(!infile.is_open()){cout<<"文件打开失败!"<<endl;}ofstreamoufile;oufile.open("./FileName_P.raw"...
代码语言:javascript 复制 #include<iostream>#include<string>#include<vector>#include<fstream>boolReadFile(std::string&strFile,std::vector<char>&buffer){std::ifstreaminfile(strFile.c_str(),std::ifstream::binary);if(!infile.is_open()){printf("Read File:%s Error ... \n",strFile.c_str()...
read ( char * buffer, streamsize size ); 这里buffer 是一块内存的地址,用来存储或读出数据。参数size 是一个整数值,表示要从缓存(buffer)中读出或写入的字符数。 // reading binary file #include <iostream> #include <fstream.h> constchar* filename = "test.txt"; ...
readd=2.71828;s.read(reinterpret_cast<char*>(&d),sizeofd);// binary inputintn;std::...
ofstreamofs2(strFilePath.c_str(),fstream::out|fstream::binary);if(ofs2.is_open()){ofs2.write((constchar*)&pt,sizeof(pt));ofs2.close();}ifstreamifs2(strFilePath.c_str(),fstream::in|fstream::binary);if(ifs2.is_open()){CPoint pt2;ifs2.read((char*)&pt2,sizeof(pt2));...