C++ Tutorial/string/string append

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Append subscript locations 4 through the end of one string to create another string

<source lang="cpp">#include <iostream>

  1. include <string>

using namespace std; int main() {

  string s1( "cat" ), s5;
  s5 = "this is a test";
  s5.append( s1, 4, s1.size() );
  
  return 0;

}</source>

Append two strings

<source lang="cpp">#include <iostream> using std::cout; using std::endl;

  1. include <string>

using std::string; int main() {

  string string1( "cat" );
  string string3;
  string3.assign( string1 );
  
  cout << "string1: " << string1 
       << "\nstring3: " << string3 << "\n\n";
  
  string3 += "pet";
  string3.append( string1, 1, string1.length() - 1 );
  cout << "string1: "   << string1 
       << "\nstring3: " << string3 << "\n\n";
  return 0;

}</source>

string1: cat
string3: cat
string1: cat
string3: catpetat

Assign one string to another

<source lang="cpp">#include <iostream>

  1. include <string>

using namespace std; int main() {

 string str1("A");
 string str2("B");
 string str3("G");
 string str4;
 cout << "  str1: " << str1 << endl;
 cout << "  str2: " << str2 << endl;
 cout << "  str3: " << str3 << "\n\n";
 // Assign one string to another.
 str4 = str1;
 cout << "str4 after being assigned str1: " << str4 << "\n\n";
 return 0;

}</source>

string overloaded +=

<source lang="cpp">#include <iostream> using std::cout; using std::endl;

  1. include <string>

using std::string; int main() {

  string string1( "cat" );
  string string2;
  string string3;
  string2 = string1;
  string3.assign( string1 );
  
  cout << "string1: " << string1 << "\nstring2: " << string2
     << "\nstring3: " << string3 << "\n\n";
  // overloaded +=
  string3 += "pet";
  string1.append( "acomb" );
  cout << "string1: " << string1 << "\nstring2: " << string2
     << "\nstring3: " << string3 << "\n\n";
  return 0;

}</source>

string1: cat
string2: cat
string3: cat
string1: catacomb
string2: cat
string3: catpet