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Questions tagged [stringstream]

stringstream provides an interface to manipulate strings as if they were input/output streams.

The objects of this class maintain internally a pointer to a stringbuf object that can be obtained/modified by calling member rdbuf. This streambuf-derived object controls a sequence of characters (string) that can be obtained/modified by calling member str.

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How to convert strings to doubles in C++ using stringstream

I'm trying to take strings from vectors and convert them into doubles using stringstream. However, when I run this code: double tempDob; stringstream ss; ss << tempVec[3]; ss >> tempDob; I get weird stuff instead of a normal double. Here's…
James Hall
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Unexpected results when using std::stringstream

I am a beginner in C++, started last week. I am trying to make a simple program converting a number of inches to foot inch notation: E.g. 62 turns into 5'2". However when I try to compile I have some error in line 8. I don't know what it is. Thanks…
mtheorylord
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using ifstream from a stringstream converted in a string

I really don't understand why if I use f.open(filename.c_str(),ios::in) works only if filename is a string defined as a string type, but not if filename is been converted from a stringstream type. I need stringstream type, because I have to open…
ADHAFERA
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Stringstream trouble

so,i'm trying to do a conversion(integer to string) and then add this string with another.But it seems stringstream is not working..(it's normally working but the loop causes troubles) I'm done with google & almost tried everything but can't get…
inhaler
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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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How to access other comma separated values from a txt file. C++

ifstream f("events.txt"); if (f.is_open()) { string l,t; string myArray[5]; int i = 0; while (getline(f, l)) { getline(stringstream(l), t, ','); cout << t << endl; myArray[i] = t; cout <<…
Zone
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Code reading extra line in my loop?

My goal is to read from an input file and count the number of lines that have at least 1 lowercase letter and 1 digit. I have already solved the rest of my code which counted all of the lowercase, uppercase, digits, characters and words no problem.…
ryanpback
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`std::stringstream::operator>>()` cannot decude the template type

I'm trying to write a generic string parser function by using std::ostringstream class. #include #include #include template ValueType parse_string(const std::basic_string &…
hkBattousai
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C++ converting from string array to int array without crashing the program

I'm trying to find the simplest way to convert a string array of numbers to an int array so that I can use it in calculations. Stringstream and stoi have so far both crashed the program or not worked. Any help? Thanks! int counter = 0; string…
John M.
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String Stream is adding a new line when converting an int

I am trying to limit the length of a line to fit on a page nicely and am using the following code if (!primes[j]) { stringstream st; st << j; test += " "+st.str(); if (test.length() > 71) { cout << line << endl; line…
Fireynis
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Passing a object member to a template function expecting an integer

I have been reading and reading posts asking similar questions but my doubts persists. So I have a class like this: class Instruction{ public: unsigned int getAddress(); uint32_t getValue(); private: unsigned int address; uint32_t…
joaomlap
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C++, Trouble with string and int conversion

I know how to convert the string when it's just made up of integers, or it begins with ints. I am trying to convert to an integer when the string starts with a char in the beginning, or middle. I've tried running through a for loop, checking if…
katamaridamacy
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C++ Error using a custom ifstream class with a variable as argument

I am using a custom ifstream class class plb_ifstream : public Parallel_istream { public: plb_ifstream(); explicit plb_ifstream(const char* filename, std::istream::openmode mode = std::ostream::in ); ~plb_ifstream(); virtual…
Fowaz Ikram
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Using fstreams and stringstreams: Trouble getting a char after getting the string (C++)

(C++) I want to display the first part, which works fine, then the dollar sign on another line, then the price. Here's what I have: string mystring; ofstream oFile( "C:\\beer.txt" ); oFile << "Heineken#$7.99" << endl; fstream File( "C:\\beer.txt" ,…
JCoder
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recursive call should output reverse string

Hello together void rev_out(istream& is){ char a; is >> a; if(a!='g')rev_out(is); cout << a; } int main() { stringstream is("abcdefg"); rev_out(is); return 0; } now the Output is gfedcba, but i have a problem. I`d like to give an universally…
Suslik
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