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Output of several data types to an ostringstream object

#include <iostream> using std::cout; using std::endl; #include <string> using std::string; #include <sstream> using std::ostringstream; int main() {    ostringstream outputString;    string string1( "string " );    double double1 = 123.4567;    int integer = 22;    outputString << string1 << double1  << integer << &integer;    // call str to obtain string contents of the ostringstream    cout << "outputString contains:\n" << outputString.str();    return 0; } outputString contains: string 123.457220x22fe74"