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Questions tagged [istringstream]

Anything related to C++ `istringstream` standard library class. This class represents an "input string stream", i.e. an input stream that allows a string to be used as the source of information attached to the stream.

Anything related to C++ istringstream standard library class. This class represents an input string stream, i.e. an input stream that allows a string to be used as the source of information attached to the stream.

istringstream is a specialization of the basic_istringstream template class and it is defined in C++ <sstream> standard library header.

See CPPreference.com on basic_istringstream template class.

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How to use istringstream twice

Possible Duplicate: C++ - repeatedly using istringstream Given this code : string line; // for the line ifstream myfile ("input.txt"); int algorithmNumber , matrixDim; getline (myfile,line); istringstream buffer(line); buffer…
JAN
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strtok or std::istringstream

I have the following code which uses strtok which receives input from a txt file. The input in the txt file is: age, (4, years, 5, months) age, (8, years, 7, months) age, (4, years, 5, months) My code looks like: char * point; ifstream…
user1823986
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Istringstream doesn't "walk" through the line

I'm trying to read in a feature vector file storing feature vectors in the following way: (label) (bin):(value) (bin):(value) etc. like: -1 5:0.015748 6:0.0472441 7:0.0393701 8:0.00787402 12:0.0314961 13:0.0944882 14:0.110236 15:0.0472441…
user1435395
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c++ istringstream

i am trying to write a c++ opengl application to load .OBJ files and i use this code to read the vertex: char buf[256]; while(!objFile.eof()) { objFile.getline(buf,256); coordinates.push_back(new std::string(buf)); } else if…
FPGA
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How to use IStringStream to read from a file?

I need to read in an expression from a file using a string stream and convert the expression to into another form. But I am having trouble figuring out how to read lines from the file using the Istringstream. Can anyone help me with the #includes…
Mike
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unexpected behavior when reading from istringstream

I have a question on the stream behavior, see the following example. What I was expecting is, since there are only 5 chars in the string, and stream read will get stuck as I am trying to read 10 chars. Instead, the output is "hellooooo" ... the last…
Oliver
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New to , trying to access data in a directory

I've never used dirent.h before. I was using istringstream to read through text files (singular), but have needed to try to revise the program to read in multiple text files in a directory. This is where I tried implementing dirent, but it's not…
Heather Wilson
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Why I can't read an integer from a stringstream which has some words followed by an integer?

I am a beginner in C++, just want to know why I cannot show the 6.9 in the second line of my output? Does it seem like I ignore the word 'lady' and then just break the getline while loop and then move to the other line? #include #include…
user18343496
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Extraction Operator reaching EOF on istringstream, behavioral change with int/char/string

So I am doing some simple file I/O in c++ and I notice this behaviour, not sure if I am forgetting something about the extraction operator and chars Note that the file format in Unix. ifstream infile("test.txt"); string line; while(getline(infile,…
DR. Palson_PH.d
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C++ Reading population records from a file

I am trying to write a C++ program that takes a list of population records from a file an exert is given below: Jackson 49292 Levy 40156 Indian River 138894 Liberty 8314 Holmes 19873 Madison 19115 Is there a good way to handle the Indian River…
Dylan Womble
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How to initialize declared istringstream with string?

In C++, how do you initialize a declared istringstream with a string? example.hpp #include class example{ private: istringstream _workingStream; public: example(); } example.cpp example::example(){ …
Eugene
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Assigning variables from configuration file to int16_t variables in c++

I have use stringstream to parse the configuration file. The c++ integer variables are working fine while assigning the values from the text file.However, when I assign the read value from configuration file to c++ int16_t variables, it just assigns…
nzy
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How to split string by my own delimiter

The program should take as input the digit infused string and the digit delimiter, and output the 4 words on separate lines. Example Please enter a digit infused string to explode: You7only7live7once Please enter the digit delimiter: 7 The 1st word…
Veronica
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using stringstream and getline to read the first two numbers of each line

What I need to do: I have a vector of lines right now, v[0] is the first line and so on. I would like to read the first number from each line as the challenge and the second number from each line as the judge and then apply the conditions in the…
user3328381
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does the this stl operator >> function make magic happens?

I have a weird problem when I test C++ STL features. If I uncomment the line if(eee), my while loop never exits. I'm using vs2015 under 64-bit Windows. int i = 0; istream& mystream = data.getline(mycharstr,128); size_t mycount =…
Bing Dennis
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