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string in cpp

By Alert AntAlert Ant on Oct 01, 2020 
// Include the string library
#include <string>

// Create a string variable
string greeting = "Hello";

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11

declaring strings c++

By amahi2001amahi2001 on Oct 19, 2020 
std::string str = "hello world"; 
char *str = "hello world";
char str[] = "hello world"; 
char str[11] = "hello world";

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4

string in c++

By Alive AngelfishAlive Angelfish on Aug 06, 2020 
#include <iostream>
#include <string>//for printing std::string
int main()

{
	//A string is a group of characters and an array of const chars
	const char* name = "Caleb";//C style string
	//how string actually works below:
	//String without null terminating character below:

	char name2[5] = { 'C','a','l','e','b' };// string is just an array of characters
	//The above doesn't have an null termination character at the end cout will not now where the string ends and will acess memory that is not a part of your string
	std::cout << name2 << std::endl;//output => Caleb + somejunk //this is because null terminating char is not present at the end of array
	//String with null terminating character below:

	char name3[6] = { 'C','a','l','e','b','\0' };//null terminating char '\0' or '0' can be used 
	std::cout << name3 << std::endl;//output => Caleb // because null terminating char is present cout knows where array ends 

	//std::string class in c++ is takes an array of const chars and a bunch of functions to manuplate it:
	//std::string has a constructor  that takes const char array
	std::string name4 = "Caleb";
	name4.size();//gives size of string and there are many more methods in std::string class
	
  //appending to std::string
  
  	//"Ever thing inside these double quotes becomes const char array"
   //std::string namee = "Caleb" +"Hello";//This will give error because adding const char array to const char array 
	std::string namee = "Caleb";
	namee += " Hello";//This will work because adding a ptr to a actual string
	std::cout << namee << std::endl;
//You can also use the below
	std::string namee2 = std::string("Caleb")+" Hello";// This will work because constructor will convert const char array  to string, adding a ptr to string
	std::cout << namee2 << std::endl;
    std::cin.get();

}

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9

c++ string

By Bright BadgerBright Badger on May 16, 2020 
#include <string>

std::string myString = "Hello, World!";

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12

c++ string

By Careful ChimpanzeeCareful Chimpanzee on Feb 28, 2021 
#include <string>
#include <iostream>
#include <type_traits>
#include <cstring>

int main() {
  std::string str = "Hello, there";
  std::cout << std::boolalpha
  << str.capacity() << ", " << str.size() << ", " << std::strlen(str.data()) // 12, 12, 12
  << '\n' << std::is_same_v<std::string, std::basic_string<char>> // true
  << '\n' << str.front() + str.substr(1, 10) + str.back() // Hello there
  << '\n' << str[0] // H
  << '\n';
  
  str += "!"; 
  std::cout << str << '\n'; // Hello, there!
  str.erase(4, 4); // Hellhere!
  str.pop_back(); // Hellhere
  str.insert(4, " "); // Hell here
  std::cout << str << '\n'; // Hell here
  
}

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1

string in cpp

By breezebreeze on Oct 20, 2020 
// you want to include <string>
#include <string>
#include <iostream>

int main() 
{
  string helloWorld = "Hello World!"; // creating string and assigning
  std::cout << helloWorld;            // will output what you assigned it!
                                      /* you can also use strings with user 
                                      input (cin/getline)*/
  string namePerson{};
  getline(cin, namePerson); // getline allows for multi word input
  std::cout << namePerson;  // outputs name which person inputted
}

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3

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