Yesterday I was working with vectors and pointers. I decided to create a simple script to display random phrases for fun. The code I wrote uses only 2 custom functions. The first function is to get a random number between 0-4 and display that index of the vector. The second is a function to display 70 newlines to clear the screen. To get a random index I use the srand and rand functions. The first function srand is used to seed the rand function. To get a number between 0-4 I used the expression (rand() % 4) which will produce 1 number between 0 and 4. In the main of my program I create a infinite while loop and use the usleep function to sleep the program after each run. I used this function so there was time to read each phrase.

C++ Random String

// Display Random String
// C++ Example
// www.TullyRankin.com
#include 
#include 
#include 
#include 
#include 
#include 
using namespace std;

string randomPhrase( const vector & p );
void clearScreen();

int main()
{
   vector phrases(4);
   phrases[0] = "The more I C, the less I see.";
   phrases[1] = "Backups? We don’t need no stinking backups.";
   phrases[2] = "Avoid the Gates of Hell. Use Linux";
   phrases[3] = "When you say "I wrote a program that crashed Windows",
   people just stare at you blankly and say "Hey, I got those with the system, *for free*";
   clearScreen();
   while ( true )
   {
   cout << randomPhrase( phrases ) << endl;
   usleep(5000000);
   clearScreen();
   }
   return 0;

}

string randomPhrase( const vector & p )
{
   int size = p.size();
   srand( time(NULL) );
   return p[rand() % 4];
}

void clearScreen()
{
   for( int i = 0; i < 75; i++ )
      cout << endl;
}