Itoa function. It can handle both positive and negative numbers. Prototype: The prototype of the itoa() is: char* itoa(int value, char* buffer, int base); Parameters: value – Value to be converted to a string. int radix 为转换数字的进制数. Here we will use the sprintf() function. Remarks. This ensures compatibility with C string handling functions. The itoa() function coverts the integer n into a character string. h> while in non-conforming mode, because it is a logical counterpart to the standard library function atoi. The logic is very simple. The standard itoa() function converts input number to its corresponding C-string using the specified base. Sep 27, 2023 · The itoa function converts an integer into a null-terminated string. Whether you‘re new to C++ or an experienced developer, this guide aims to provide […] Dec 1, 2022 · These functions can generate an access violation if buffer doesn't point to valid memory and isn't NULL, or if the length of the buffer isn't long enough to hold the result string. The function returns a pointer to the resulting null-terminated string (str). It appeared in the first edition of Kernighan and Ritchie's The C Programming Language, on page 60. It takes an integer (value), a character array (str) where the resulting string will be stored, and a base (base) for the conversion. SYNTAX - char * itoa ( int value, char * str, int base ); The string we Oct 30, 2023 · The itoa() function is a simple yet powerful tool for converting integers into strings in C++. The radix values can be OCTAL, DECIMAL, or HEX. @evilclown: the reason not to call snprintf directly the is the same reason anyone ever writes a function: to abstract the operation specifically of converting an integer to a string, as opposed to any of the many things which snprintf can do with different string formats. Mar 17, 2025 · itoa function is used to convert int data type to string data type in C language. The resulting string is null-terminated, meaning it ends with a null character ('\0') to mark the string’s termination. h header file. The string is placed in the buffer passed, which must be large enough to hold the output. 返回值：返回指向转换后的字符串指针 Jun 4, 2025 · This function does not return any value. Examples of iota() iota() can be used with any range with data types that have a well-defined increment operation (++). 参数：int i 为要转换为字符的数字. In this section we will see how to convert an integer number to a string. It was one of the STL components that were not included in C++98, but made it into the standard library in C++11. This post will show you how to use itoa() with examples. Syntax of itoa in C: Feb 12, 2024 · itoa() is a function in C that converts an integer to a null-terminated string. This function is used to print some value or line into a string, but not in the console. 头文件：<stdlib. Click on each function name below for description and example programs. Typecasting functions in C language performs data type conversion from one type to another. char * itoa ( int value, char * str, int base ); Convert integer to string (non-standard function) Converts an integer value to a null-terminated string using the specified base and stores the result in the array given by str parameter. Except for the parameters and return value, the _itoa_s and _itow_s function families have the same behavior as the corresponding less secure _itoa and Feb 15, 2022 · Learn how to use itoa() function in C with examples. It is a standard library function that is defined inside stdlib. Note: iota() function only works for those STL containers that support random access using index numbers such as vector, deque, etc. Syntax of the itoa() Function . In this comprehensive guide, we‘ll be exploring every aspect of itoa() in great detail, including its purpose, parameters, proper usage, performance implications, alternatives, and more. The second edition of The C Programming Language ("K&R2") contains the following implementation of itoa, on page 64. h> 函数原型： char *itoa(int i,char *s,int radix); 功能：用于把整数转换成字符串. Apr 16, 2020 · The itoa (integer to ASCII) function is a widespread non-standard extension to the standard C programming language. 函数名：itoa. It cannot be portably used, as it is not defined in any of the C language standards; however, compilers often provide it through the header <stdlib. The below examples demonstrate the use of iota itoa was a non-standard helper function designed to complement the atoi standard function, and probably hiding a sprintf (Most its features can be implemented in The itoa function in C is a non-standard function used to convert an integer to a string. Syntax of itoa in C char* itoa(int num, char* buffer, int base); Oct 10, 2008 · itoa is not a standard C function. You can implement your own. It can convert negative numbers too. The itoa() function is used to convert an integer value to string in C. Example May 1, 2021 · Write an efficient function to implement itoa() function in C. char *s 为转换后的指向字符串的指针. Mar 20, 2025 · The function is named after the integer function ⍳ from the programming language APL. itoa() function converts int data type to string data type. mbf ijwmm ihi opgtti ocwisy uzbpgqo pwlt pnyeo gglpowe jgcta