Integer to String

Hi all,

We have atoi() to convert a string into an integer. How about the other way round?
Can anyone tell me how to convert an integer into a string? Thank you..

Code:

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int num = 12345;
char string[6];
snprintf(string, 6 ,"%d", num);

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yes, it's

Code:

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char buffer[20];
int i = 1234;
itoa(buffer, i, 10) // 10 is the radix, base 10. try base 2 for binary representation
//try switching 'buffer' and 'i' around if that doesn't compile. i forget the order of parameters

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Next time try providing a portable answer. Your answer is a GNU extension specific solution. Try the standard sprintf instead.

Code:

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char buf[ BUFSIZ ] = {0};

sprintf( buf, "%d", 12345 );

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On an aside, this is a very common question that, if not in the faq already, certainly gets asked on the forums all the time. Therefore, for future reference, try searching the forums (as the Announcements suggest) for answers first.

Quzah.

Quote:

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Originally Posted by quzah

Try the standard sprintf instead.

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Didn't know that snprint wasn't portable. I also figured that it's better to use to prevent a buffer overflow.

Quote:

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Originally Posted by l0cke

Didn't know that snprint wasn't portable. I also figured that it's better to use to prevent a buffer overflow.

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Well, to quote the man page:

Quote:

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CONFORMING TO

These are GNU extensions.

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Yes, it's better for the prevention of buffer overflows, but it's not a standard function. Just like all of the strn* functions aren't standard.

Quzah.

Quote:

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Originally Posted by quzah

Just like all of the strn* functions aren't standard.

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I believe strncpy, strncat, and strncmp have been standard for a while; snprintf is standard in C99.

*looks* Well so they are. I guess it's time for rt to update their man pages (my quick point of reference usually).

Quzah.