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Questions tagged [sstream]

111 questions
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Why does cleaning istringstream fail?

While converting a string to integer I just fail to clear my istringstream to place in another number. I have tried all kinds of different solutions but it just wont work. There are a few work arounds but I'd like to learn to know why... So…
Johnnie W
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Using preprocessor directives with cout and stringstream in interactive program - C++

so if I have a simple interactive program like this: #include #include #include #include #define cout os int main() { stringstream os; cout << "If you would like to continue, type 'Continue'" <<…
user313
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Why am I getting a timeout(using sstream to parse list of integers separated by commas)?

I am given an input string of n integers, separated by commas (e.g. "23,4,56"). I need to set a stringstream to represent this string and then use it to scan each integer into a vector. The elements of the vector (the integers in the list) will end…
Yang-Yang Feng
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what library to use for stoi keyword in c++

my question is pretty simple but I can't seem to find it out. I want to know what libary to include when using stoi. I was using atoi and it works fine with #include #include #include using namespace std; but I get…
Safwan Ull Karim
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Split a larger string and stop if a particular character is found

The input is a standard string input. Like this. "Anand,Ramesh,Suresh#Anand,Ramesh,Suresh,Suresh,Anand" I want to get get all the Names before the # and store it in an array. And use the names after the # to do some operation. How do I copy the…
Shivji
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sstream not populating vector C++

With input in the command line: 1 2 3 Which is stored in 'line' my vector is only being populated with 1 What am I doing wrong? Here is the code string line; string buffer; int a,b,base; cin >> line; stringstream ss(line); …
Barney Chambers
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What is the best way (performance driven) to convert and write variables to a file in c++?

I want to write something like this to a file: 0x050 addik r13, r0, 4496 0x054 addik r2, r0, 2224 0x058 addik r1, r0, 7536 0x05c brlid r15, 200 ... And so on... Its a program instruction trace which will have thousands of lines. I am reading from…
joaomlap
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What is a possible way to store data from a stringstream into an unsigned long?

I am trying to make a program which puts the contents stored in a stringstream (a large number) into an unsigned long format. But the compiler shows an error error: invalid user-defined conversion from 'std::stringstream {aka…
Vaibhav
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Is there method of in place string manipulation native to the mingw libraries that doesn't involve i/o streams

I am attempting to construct a serial number of a certain format. This number will be entered into a database. At this point I am having to use sprintf, but I would like a native C++ method for it. Here is sample code: int i; sprintf(buffer,…
pwn01
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Does stringstream (or boost) have some smart format feature?

I am writing some hobby code today for fun, and while I did some stuff I came along something interesting that I would like to do in a way that sounds and looks nice/great/cool. The idea is basically that you have a string in C++ and you pass it to…
Gizmo
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Not getting all lines from a text file when using getline() in C++

I was given a homework assignment to generate a txt file containing a random number of lines, each with a random amount of integers, ranging between a minimum value and a maximum value. Lots of rand() fun. In any case, that was the easy part. The…
Gil Dekel
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Reading multiple data from string, separated by characters using sstream

I have .txt file with text like this inside (this is just a fragment): ... [332, 605]-[332, 592], srednica: 13 [324, 593]-[332, 605], srednica: 14.4222 [323, 594]-[332, 605], srednica: 14.2127 [323, 594]-[331, 606], srednica: 14.4222 [324,…
countryroadscat
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Issues in using istringstream

#include #include #include #include using namespace std ; int main() { ifstream infile ; infile.open("input.txt") ; string line ; int noOfVar,noOfCubes ; getline(infile,line) ; …
abkds
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Cant get this to update the variables C++

I'm writing a program that is a calculator where you would type in the sum and it would give you the answer. That part works fine. The problem I am having is taking the answer of the previous sum and doing a calculation with that. Like: 5 + 5 = 10…
Gordy
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C++ Reading a Large File and Putting Data in an Array

I have a file with 500,000 random (6-7 digit) numbers. I want to write all the numbers, one at a time, to an array. A Vector will work flawlessly in this code BUT, I'm afraid my teacher just won't allow the use of Vectors. Here is my code: int…
cerealspiller
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