void DataRead_CPPMode() { double pos[200]; ifstream f("binary.dat", ios::binary); if(!f) { cout << "读取文件失败" <<endl; return; } f.read((char*)pos,200*sizeof(double)); for(int i = 0; i < 200; i++) cout << pos[i] <<endl; f.close(); }--六...
inF.open("data.bin", std::ifstream::binary);//以二进制格式打开文件inF.seekg(0, ios::end);//将输入指针指向文件末尾length = inF.tellg();//获取当前指针位置cout <<"the length of the file is"<< length <<""<<"byte"<<endl; unsignedchar* data =newunsignedchar[length]();//读取文件数...
void DataRead_CPPMode() double pos200; ifstream f("binary.dat", ios::binary); if(!f) cout << "读取文件失败" <<endl; return; f.read((char*)pos,200*sizeof(double)); for(int i = 0; i < 200; i++) cout << pos <<endl; f.close(); 六 总结 1. C语言读写文件均通过FILE指...
//int readBinFile(std::string& filename, void*& bufPtr, int& pointNum, int pointDim) int main() { // open the file: std::streampos fileSize; //实例化fpos用于表示窄向流中的位置。 std::ifstream file("/home/oem/CLionProjects/untitled/a.bin", std::ios::binary); //指向二进制文件...
void DataRead_CPPMode() { double pos[200]; ifstream f("binary.dat", ios::binary); if(!f) { cout << "读取文件失败" <<endl; return; } f.read((char*)pos,200*sizeof(double)); for(int i = 0; i < 200; i++) cout << pos[i] <<endl; f.close(); } --六 总结 1. C...
ofstream out;out.open("data.txt",ios::in|ios::out|ios::binary) fstream 流方法读数据 data.txt文件如下 1.读取方式:逐词读取, 读词之间用空格区分 代码语言:javascript 代码运行次数:0 运行 AI代码解释 voidreaddatafromfileWBW(){ifstreamfin("data.txt");string s;while(fin>>s){cout<<s<<" "...
void TxtRead_Cmode(){ FILE * fid = fopen("txt_out.txt","r");if(fid == NULL){ printf("打开%s失败","txt_out.txt");return;} vector<int> index;vector<double> x_pos;vector<double> y_pos;int mode = 1;printf("mode为1，按字符读⼊并输出；mode为2，按⾏读⼊输出；mode为3，...
ifstream ifs(read_file,ios::binary); assert(ifs); time_tstart, end; start = clock(); while(!ifs.eof()) { ifs.read(buf,BUF_SIZE); } end = clock(); ifs.close(); cout<<"C++ style: "<<end - start <<" ms"<<endl;
#include <fstream> #include <iostream> int main() { const std::string source = "source.txt"; const std::string destination = "destination.txt"; std::ifstream input(source, std::ios::binary); std::ofstream output(destination, std::ios::binary); if (!input.is_open()) { std::cerr...
size_t pictureDataSize = 0; void *pictureHostData; void *pictureDeviceData; //申请内存,使用C/C++标准库的函数将测试图片读入内存 void ReadPictureTotHost(const char *picturePath) { string fileName = picturePath; ifstream binFile(fileName, ifstream::binary); binFile.seekg(0, binFile.end); pi...