stringstream converts unsigned long to formatted numeric string with commas

Question

here's my code:

unsigned long a_ptr = *(unsigned long*)agent.m_ptr;
std::string a_type = agTypeToText(agent.GetType());
std::string a_cat = agCategoryToText(agent.GetCategory());

std::stringstream selInfo;
selInfo << "Agent pointer: " << a_ptr << "\nAgent type: " << a_type << "\nAgent category: " << a_cat;

when I display this, a_ptr looks like 834,993,193

when in reality i want it to display as a hexadecimal number, something like 0xFACEF00D, with or without the 0x. is there any way I can do this with stringstream?

have a look at [uintptr_t](http://stackoverflow.com/questions/1845482/what-is-uintptr-t-data-type) — Ryan Haining, Aug 29 '15 at 21:33

Ryan Haining · Answer 1 · 2015-08-29T21:29:25.467

1

Yes by passing std::hex to your stringstream

std::stringstream ss;
unsigned long v = 12345678910;
ss << std::hex << v;
std::cout << ss.str() << '\n';

or if you prefer uppercase digits

ss << std::uppercase << std::hex << v;

edited Aug 29 '15 at 21:29

answered Aug 29 '15 at 21:22

Ryan Haining

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yes, i thought so. however while it now shows the proper hex characters, they are still comma separated. – Stephen K Aug 29 '15 at 21:24
Not for me. How are you printing the string? – Ryan Haining Aug 29 '15 at 21:26
`font.Draw(312, 7, 0xffffffff, selInfo.str());` where `font.Draw` is defined as: `void Font::Draw(float x, float y, DWORD color, std::string format, ...) const` – Stephen K Aug 29 '15 at 21:29
i figured it out - it was due to the addition of this: `locale::global(locale("en-US"));` embarassing. – Stephen K Aug 29 '15 at 21:50

stringstream converts unsigned long to formatted numeric string with commas

1 Answers1