stringstream

This question already has an answer here: How do you clear a stringstream variable? 8 answers stringstream parser; parser << 5; short top = 0; parser >> top; parser.str(""); //HERE I'M RESETTING parser parser << 6; //DOESN'T PUT 6 INTO parser short bottom = 0; parser >> bottom; Why doesn't it work? CB Bailey Typically to 'reset' a stringstream you need to both reset the underlying sequence to an empty string with str and to clear any fail and eof flags with clear . parser.str( std::string() ); parser.clear(); Typically what happens is that the first >> reaches the end of the string and sets

This question already has an answer here: How do I iterate over the words of a string? 76 answers I've got the following code: std::string str = "abc def,ghi"; std::stringstream ss(str); string token; while (ss >> token) { printf("%s\n", token.c_str()); } The output is: abc def,ghi So the stringstream::>> operator can separate strings by space but not by comma. Is there anyway to modify the above code so that I can get the following result? input : "abc,def,ghi" output : abc def ghi jrok #include <iostream> #include <sstream> std::string input = "abc,def,ghi"; std::istringstream ss(input); std

When I use getline , I would input a bunch of strings or numbers, but I only want the while loop to output the "word" if it is not a number. So is there any way to check if "word" is a number or not? I know I could use atoi() for C-strings but how about for strings of the string class? int main () { stringstream ss (stringstream::in | stringstream::out); string word; string str; getline(cin,str); ss<<str; while(ss>>word) { //if( ) cout<<word<<endl; } } paercebal Another version... Use strtol , wrapping it inside a simple function to hide its complexity : inline bool isInteger(const std::string

My question can be boiled down to, where does the string returned from stringstream.str().c_str() live in memory, and why can't it be assigned to a const char* ? This code example will explain it better than I can #include <string> #include <sstream> #include <iostream> using namespace std; int main() { stringstream ss("this is a string\n"); string str(ss.str()); const char* cstr1 = str.c_str(); const char* cstr2 = ss.str().c_str(); cout << cstr1 // Prints correctly << cstr2; // ERROR, prints out garbage system("PAUSE"); return 0; } The assumption that stringstream.str().c_str() could be