How do i change an int variable to a string variable in c?

Question

You read the question I need to be able to scan a int value and print it back out as a string variable

http://stackoverflow.com/questions/8257714/how-to-convert-an-int-to-string-in-c — theedam, Apr 10 '14 at 11:52

score 0 · Answer 1 · answered Apr 10 '14 at 11:51

0

If you just want to print it back, you can use the "%d" specifier when using printf. If you want to convert the integer value to a character string for other purposes, you can use itoa.

answered Apr 10 '14 at 11:51

shebaw

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`itoa` is not a standard function. `sprintf` or `snprintf` would be a better idea. – M.M Apr 10 '14 at 12:11

ajay · Answer 2 · 2014-04-10T12:34:03.580

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You can use the sprintf function to do it.

int a;
// [log(2^63 - 1)] + 1  = 19 where
// [x] is the greatest integer <= x
// +1 for the terminating null byte 
char s[19+1];

// read an integer
scanf("%d", &a);

// store the integer value as a string in s
sprintf(s, "%d", a);

edited Apr 10 '14 at 12:34

answered Apr 10 '14 at 11:52

ajay

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May overflow `s`, I'd highly recommend using `snprintf`. Who's to say you won't upgrade compiler at some point in future and get a 64-bit int? – M.M Apr 10 '14 at 12:12
@MattMcNabb updated the answer. Yes, `snprintf` is a safer option. – ajay Apr 10 '14 at 12:34

score 0 · Answer 3 · edited May 23 '17 at 11:49

0

YOu should use sprintf instead of itoa as it iota is not a starndard

int aInt;
scanf("%d", &aInt)
char str[50];
sprintf(str, "%d", aInt);

detail use of sprintf

edited May 23 '17 at 11:49

Community

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answered Apr 10 '14 at 12:00

neel shah

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How do i change an int variable to a string variable in c?

3 Answers3