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Arrays are basic structures wherein one or more elements exist "side by side" and are of the same "type". An "integer" array is an array whose elements are all of an integer type which has no fractional component. A "character" array is an array which contains nothing but character types. A "floating point" array contains elements that have both an integer and fractional portion. Simply put, they are arrays of particular types.
A std::string is an object that encapsulates an array of type char whereas a C-style string is a primitive array with no members. A std::string is guaranteed to be null-terminated but a C-style string is not.
In C programming, a string doesn't have a specific return type as it's essentially an array of characters. So, if a function is returning a string, it should be declared to return a pointer to a char (char*), since a string in C is represented as an array of characters terminated by a null character ('\0').
std::string input = ""; std::getline (std::cin, input); // get input from stdin std::stringstream ss (input); // place input in a string stream integer num = 0; if (ss >> num) // extract integer from string stream { // Success! } else { // Fail! }
A string in C is stored in a 1 dimension array so an array of strings is simply a two dimension array.
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A std::string is an object that encapsulates an array of type char whereas a C-style string is a primitive array with no members. A std::string is guaranteed to be null-terminated but a C-style string is not.
Arrays are basic structures wherein one or more elements exist "side by side" and are of the same "type". An "integer" array is an array whose elements are all of an integer type which has no fractional component. A "character" array is an array which contains nothing but character types. A "floating point" array contains elements that have both an integer and fractional portion. Simply put, they are arrays of particular types.
In C programming, a string doesn't have a specific return type as it's essentially an array of characters. So, if a function is returning a string, it should be declared to return a pointer to a char (char*), since a string in C is represented as an array of characters terminated by a null character ('\0').
std::string input = ""; std::getline (std::cin, input); // get input from stdin std::stringstream ss (input); // place input in a string stream integer num = 0; if (ss >> num) // extract integer from string stream { // Success! } else { // Fail! }
Every programming language treats strings as arrays. A C string is defined as being a null-terminated array of characters. A C string that does not have a null-terminator is just an array of character values, but without a null-terminator the onus is upon the programmer to keep track of the array's length.
You can't convert the data type of any variable.
Reference:cprogramming-bd.com/c_page1.aspx# array programming
Character.toString('c')
String and array are not related to one another so they have many differences. a. A string is used to hold alpha numeric values inside it b. An Array is used to hold multiple values of any primitive data type c. A String has operations like equals, concatenate, substring etc whereas an array does not have them d. You can iterate through an array but we cannot iterate through a string.
In computer programming, a "string" usually refers to an array of characters. A string may consist of nothing (an empty string) or as many characters as are allowed in an array. To denote a string, surrounding a list of characters by double quotes is the typical standard.Strings:* "" * "abc" * "Cows say 'Moo!'" * "http://wiki.answers.com"Numbers are those fun symbols you remember from math class. The confusing part is when a string contains numbers ("123"). Usually a programming language will have a way to convert between a string of numbers and an actual number type, in case you happen to need to do math with the string.