stringstream

I've this sample program of a step that I want to implement on my application. I want to push_back the int elements on the string separately, into a vector. How can I? #include <iostream> #include <sstream> #include <vector> using namespace std; int main(){ string line = "1 2 3 4 5"; //includes spaces stringstream lineStream(line); vector<int> numbers; // how do I push_back the numbers (separately) here? // in this example I know the size of my string but in my application I won't } int num; while (lineStream >> num) numbers.push_back(num); Johannes Schaub - litb This is a classic example of

Possible Duplicates: Don't print space after last number Printing lists with commas C++ #include <vector> #include <iostream> #include <sstream> #include <boost/foreach.hpp> using namespace std; int main() { vector<int> VecInts; VecInts.push_back(1); VecInts.push_back(2); VecInts.push_back(3); VecInts.push_back(4); VecInts.push_back(5); stringstream ss; BOOST_FOREACH(int i, VecInts) { ss << i << ","; } cout << ss.str(); return 0; } This prints out: 1,2,3,4,5, However I want: 1,2,3,4,5 How can I achieve that in an elegant way? I see there is some confusion about what I mean with "elegant": E.g.

I want to know if it is possible to transform a std::vector to a std::stringstream using generic programming and how can one accomplish such a thing? Adapting Brian Neal's comment, the following will only work if the << operator is defined for the object in the std::vector (in this example, std::string ). #include <iostream> #include <sstream> #include <vector> #include <string> #include <iterator> // Dummy std::vector of strings std::vector<std::string> sentence; sentence.push_back("aa"); sentence.push_back("ab"); // Required std::stringstream object std::stringstream ss; // Populate std:

How do I convert from std::stringstream to std::string in C++? Do I need to call a method on the string stream? Tyler McHenry ​​​​​​​ yourStringStream.str() Emil H Use the .str()-method : Manages the contents of the underlying string object. 1) Returns a copy of the underlying string as if by calling rdbuf()->str() . 2) Replaces the contents of the underlying string as if by calling rdbuf()->str(new_str) ... Notes The copy of the underlying string returned by str is a temporary object that will be destructed at the end of the expression, so directly calling c_str() on the result of str() (for

This question already has an answer here: stringstream, string, and char* conversion confusion 5 answers EDIT : Thanks to everyone who pointed out the problem, and that it was discussed on Stack Overflow. I cast the last close vote myself. A related question: neither CPP Reference on ostringstream or ostringstream::str state its a temporary. How did so many people know? Or is there different documentation I should have consulted? I'm having a lot of trouble with memory errors under Debian 7.3 (x64) with GCC 4.7.2, -std=c++11 and std::ostringstream . Its leading to bizaare results like https:/

1.头文件：#include<sstream> 2.stringstream是C++提供的串流（stream）物件，其中： clear()重置流的标志状态；str()清空流的内存缓冲，重复使用内存消耗不再增加！ 在使用stringstream时遇到的问题： #include <cstdlib> #include <iostream> #include <sstream> using namespace std; int main(int argc, char * argv[]) { stringstream stream; int a,b; stream<<"80"; stream>>a; stream<<"90"; stream>>b; cout<<a<<endl; cout<<b<<endl; system("PAUSE "); return EXIT_SUCCESS; } 运行结果： 预期b为90，但是出现-858993460， 这是由于stringstream重复使用时，没有清空导致的。 修改之后： #include <cstdlib> #include <iostream> #include <sstream> using namespace std; int main(int argc, char * argv[]) { stringstream stream; int

I am trying to modify a stringbuffer of a stringstream object without having to copy a string, using the method pubsetbuf, but it is not working. I am following the documentation in http://www.cplusplus.com/reference/iostream/streambuf/pubsetbuf/ . Here is my example code: #include <iostream> #include <sstream> int main(int argc, char* argv[]) { std::stringstream stream("You say goodbye"); char replace[] = {"And I say hello"}; std::cout << stream.str() << std::endl; // Checking original contents stream.rdbuf()->pubsetbuf(replace, 16); // Should set contents here std::cout << stream.str() <<