From 82ba818ff456bcd6d56a06226e3f27e98fbb55c3 Mon Sep 17 00:00:00 2001 From: Craig Jennings Date: Thu, 14 Aug 2025 22:58:58 -0500 Subject: removing all downloaded devdocs files --- devdocs/c/string%2Fbyte%2Fatoi.html | 60 ------------------------------------- 1 file changed, 60 deletions(-) delete mode 100644 devdocs/c/string%2Fbyte%2Fatoi.html (limited to 'devdocs/c/string%2Fbyte%2Fatoi.html') diff --git a/devdocs/c/string%2Fbyte%2Fatoi.html b/devdocs/c/string%2Fbyte%2Fatoi.html deleted file mode 100644 index b4a114d3..00000000 --- a/devdocs/c/string%2Fbyte%2Fatoi.html +++ /dev/null @@ -1,60 +0,0 @@ -

atoi, atol, atoll

Defined in header <stdlib.h> 
int       atoi( const char *str );
-		 
long      atol( const char *str );
-		 
long long atoll( const char *str );
-		 (since C99)

Interprets an integer value in a byte string pointed to by str. The implied radix is always 10.

-

Discards any whitespace characters until the first non-whitespace character is found, then takes as many characters as possible to form a valid integer number representation and converts them to an integer value. The valid integer value consists of the following parts:

-

If the value of the result cannot be represented, i.e. the converted value falls out of range of the corresponding return type, the behavior is undefined.

-

Parameters

- -
str - pointer to the null-terminated byte string to be interpreted

Return value

Integer value corresponding to the contents of str on success.

-

If no conversion can be performed, ​0​ is returned.

-

Notes

The name stands for "ASCII to integer".

-

Example

#include <stdio.h>
-#include <stdlib.h>
- 
-int main(void)
-{
-    printf("%i\n", atoi(" -123junk"));
-    printf("%i\n", atoi(" +321dust"));
-    printf("%i\n", atoi("0"));
-    printf("%i\n", atoi("0042")); // treated as a decimal number with leading zeros
-    printf("%i\n", atoi("0x2A")); // only leading zero is converted discarding "x2A"
-    printf("%i\n", atoi("junk")); // no conversion can be performed
-    printf("%i\n", atoi("2147483648")); // UB: out of range of int
-}

Possible output:

-
-123
-321
-0
-42
-0
-0
--2147483648

References

See also

- - - - -
-
(C99)
 converts a byte string to an integer value
(function)
-
(C99)
 converts a byte string to an unsigned integer value
(function)
-
(C95)(C99)
 converts a wide string to an integer value
(function)
-
(C95)(C99)
 converts a wide string to an unsigned integer value
(function)
C++ documentation for atoi, atol, atoll
-

- © cppreference.com
Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.
- https://en.cppreference.com/w/c/string/byte/atoi -

-
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