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What are the different issues if a string is implemented as a primitive or as a character array?
Even in languages where string is a type, it is still an array of characters. A computer can not represent a string as a primitive type. That said, the difference between using the programming language string object or an array or list if characters will differ based on language. Though in most languages which offer a string type, it would mean that you'd have to implement all the functions provided for you by the type on your own. A string object class simply provides a series of utility functions to manipulate a character array within.
How do you store a string of letters for example abcdeabcde each to an array?
In C programming you would use the following: char a[] = "abcdeabcde"; If you wish to create an array with more than one string, use an array of character pointers instead: char* a[] = {"abcde", "fgh", "ijklm", "nopq", "rstu", "vwxyz"};
What are array of string pointers?
An array of pointers to string would contain, per array position, a number dictating which memory address holds the string data. For example, position [0] in an array would contain a memory address. This memory address can be de-referenced to obtain the actual information held within that memory address.
What does chomp do in perl?
Most commonly it's used to remove the newline character from the end of a string or an array of strings. If the newline character isn't there, then nothing is done to the string. There are other details involved in what chomp does, but mostly that is what it is used for. For instance you can change which character is considered the be the newline character. If you want to know more, I would suggest reading the documentation.
How can you convert from int to string?
There is no one line of code that can convert an array to a different type. A new String array would have to be created and values individually inserted into the array. Example: //Assume int[] i has been previously defined String[] s = new String[i.length]; for(int i=0; i<s.length; i++) s[i] = ""+i[i];
What do you mean by string in c language?
Character arrays or pointers to character are termed as strings in c language. Like:char arr[10] = {'s', 't', 'i', 'n', 'g'};char *pchar = "string";Above answer is the first answer for the questionBut there is a lot of difference between character array and string.string means a group of characters .And string is enclosed between double quotation marks i.e(" ") .Declaration of string is same as of char array ,which is as followschar str[20];And initialization is different from that of character arrayinitialization:-char str[7]={"vardhan"};
What is the difference between a string and an array?
Nothing whatsoever. A string is simply an array of type char. In some programming languages, such as C, a string is an array of char (or short), terminated with a null \0. An array is just a fixed size of collection, a container to hold things/objects. If all the elements in the container are characters (of char), then we may call it a string, sometimes a byte array (because each character can be represented as a byte). An array of 7 different days, it maybe a WEEK, or just the birthdays of 7 dwarfs. Then they are nothing to do with strings. A data item (or variable) is described as a "string" type when it contains some number of characters. Those characters can usually be anything in the system's accepted list of codes. Most systems use ASCII, so a string can include the letters a-z, A-Z, numbers 0-9, and special characters like ~!@#$%^&*()_+-=[]\{}|:";'<>?,/. A string is treated as a single object, although most programming languages have methods to break strings apart (called sub-stringing). In the Perl language, strings are named $something. An array is a collection of individual data items, sort of like a list. Each element in an array can be referred to in a program by its position in the list. In the Perl language, an array would be named @SOMETHING. The first element in the array would be named $SOMETHING[0], the second $SOMETHING[1], and so on. Each element can be a string, or some other data type. Other data types would be integers (positive or negative whole numbers), floating point (decimal numbers like 3.14159 or 2398.41; it can be more complicated than this, but that's another story), and a few more exotic types. In the C programming language a string is actually the same as an array of characters. The last character in a C string is a zero byte which indicates the end of the string.
What is a character array?
A character array is list of pointers that point to characters. The way to use an array would depend on the language. Most arrays are 0 indexed meaning they begin at 0.
No of occurrence of element in an array?
The below is an example to find the instance of a string in a string array. You can modify this to any kind of array and also pass the array and value to be checked as parameters. public class ArrayTest { /** * @param args */ public static void main(String[] args) { String[] strArr = new String[] {"One", "Two", "Three", "Four", "One"}; String txt = "One"; int size = strArr.length; int counter = 0; for(int i = 0; i < size; i++){ String temp = (String) strArr[i]; if(temp.trim().equals(txt)){ counter++; } } System.out.println("The word '" + txt + "' occurs " + counter + " Times in the array"); } } The output of this program would be: The world 'One' occurs 2 Times in the array
How a string can be handled by array?
A string is an array. To be precise, a string is an array where every element is a character type. The term string simply relates to the fact the array (like any other type of array) resides in contiguous memory, thus forming a string of characters in memory.There are in fact two types of string array. The most common is the ASCII string, where each element is 1 byte in length (an array of type char). The other is the UNICODE string where each element is 2 bytes in length (an array of type wchar_t).In essence, ASCII strings are constructed from character codes 0-255 in the standard ASCII character set, while UNICODE can represent up to 65,536 different character codes, the first 256 being the same as the ASCII character set. UNICODE is generally used to provide character codes that are not available in ASCII, however many systems (Microsoft in particular) handle all strings as UNICODE strings (converting to and from ASCII as required). If you do a lot of string manipulation, then it is often best to use UNICODE at all times to reduce the amount of conversions going on in the background (check your compiler's documentation for specifics).When dealing with strings we often talk about string buffers. A buffer is simply an array of a specific size (allocated dynamically or statically) within which we can store a sequence of character codes. Since characters are consistently either one byte or two bytes long, it's easy to determine how many characters we can place in these buffers.However, just to confuse matters, there is actually a third type of string known as a variable-width encoded string. Microsoft calls these MBCS strings, but this really means multibyte character set, which is not the same. The width of a character is determined by the encoding, not the character set. The details don't really concern us, but suffice to say, each character has variable-width and there are many different encoding schemes available. As a general rule, if you must deal with variable-width encoded strings, use UNICODE instead, and only encode as variable width when you must. It'll make your life a lot simpler in the long run.You will undoubtedly encounter other types of string, such as std::string (and its UNICODE equivalent, std::wstring). This is really just an object that encapsulates a character array so you can use it just as you would a standard character array. However, do not let this fool you -- it is not a character array per se, it is merely a wrapper that mimics an array. There is an underlying array within the object's members, and several useful methods to manipulate the array (such as concatenating two strings), however memory management is handled by the object. While this simplifies things for programmers, it is not the most efficient way to store a string when that is all you want to do. But if you want to actually manipulate the string, then std:string is as good a way as any.To make use std:string you must include in your project. Do not confuse this with which merely declares a set of functions for manipulating c strings and arrays (the old fashioned way). This header is often called "cstring", which is often confused with the Microsoft-specific class CString (note the captialisation). CString can be likened to std:string in a lot of respects and crops up virtually everywhere in Microsoft objects. It is actually derived from the CStringT template which is itself derived from CSimpleStringT. It is therefore more complex, but the interface is extremely simple to use and if you do a lot of string manipulation, then CString can make life that much easier. But as it is not part of the standard language, its best avoided when code must be shared between platforms.
How do you swap two arrays in c plus plus using string?
You can't. While a string is a character array, an array is not necessarily a string. Treating arrays as if they were strings simply to swap them is madness. The correct way to physically swap arrays A and B is to copy A to a new array, C, then copy B to A, then C to B. If the arrays are the same size this is not a problem. If they are different sizes, you can only swap them if they are dynamic (not static). This means you must reallocate them. To speed up the process, copy the smallest array to C, first. A much better approach would be to point at the two arrays and swap the pointers instead.
How many bytes are occupied by declaring following array of characters?
A single-byte type of array has 1 byte per character; a wide-character array has 2 bytes per character of storage. Without seeing the exact definition it cannot be determined what the actual size of the array would be.
