C++ Tutorial/string/string at

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Demonstrating member function at

#include <iostream>
using std::cout;
using std::endl;
#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";
   // demonstrating member function at
   for ( int i = 0; i < string3.length(); i++ ) 
      cout << string3.at( i );
   return 0;
}
string1: cat
string2: cat
string3: cat
cat"

Use member function at() to

#include <iostream>
#include <string>
using namespace std;
int main()
{
   string s1( "cat" ), s2, s3;
   s2 = s1;          
   s3.assign( s1 );  
   cout << "s1: " << s1 << "\ns2: " << s2 << "\ns3: "
        << s3 << "\n\n";
   // demonstrating member function at()
   int len = s3.length();
   for ( int x = 0; x < len; ++x ) 
      cout << s3.at( x );
   return 0;
}