/* This program was created by C.V.Hariharan on
10th April 2014. This program is a random topic 
generator for generating topics to write articles on.
Connect an LDR to analog input A0.
*/

const int ldr = A0; 
int ldrread = 0;  // To read the input from ldr and store it.
int rnumber = 0;  // 
int rselector = 0;
int i = 0;
char noun[200];
char* randargue1[] = {"History of ", "5 myths about ", "10 tips to get started with ", "10 misconceptions about "}; // Arrays having pre-stored prefixes to add to the sentence
char* randargue2[] = {"What is ", "Why you should invest in ", "The ultimate cheat sheet on ","Disadvantages of "};
char* randargue3[] = {"Ultimate guide to ", "Advantages of ", "How to make a ", "The future of "};
char* randargue4[] = {"Science behind ", "Mathematics behind ", "How do they make a ", "5 upcoming "};
void setup()
{
  pinMode(ldr, INPUT); // For randomseed
  randomSeed(analogRead(A0));
  Serial.begin(9600);
  Serial.print("Enter a noun in singular form to get started: ");
  Serial.print('\n');
  
}
void loop()
{ 
  while(Serial.available()==0);
  Serial.readBytesUntil('\n', noun, 200); // Read the characters and store them in the char array noun till enter(\n) is detected
  while(i<=4){   
  rselector = i; 
  switch(rselector)
  {
    case 1: 
    rnumber = random(4);  // In array 1 choose a random prefix
    Serial.print(randargue1[rnumber]);
    Serial.print(noun);
    Serial.print('\n');
    delay(2000);
    break;
     
    case 2:
    rnumber = random(4);  // In array 2 choose a random prefix
    Serial.print(randargue2[rnumber]);
    Serial.print(noun);
    Serial.print('\n');
    delay(2000);
    break;
    
    case 3:
    rnumber = random(4); // In array 3 choose a random prefix
    Serial.print(randargue3[rnumber]);
    Serial.print(noun);
    Serial.print('\n');
    delay(2000);
    break;
    
    case 4:
    rnumber = random(4); // In array 4 choose a random prefix
    Serial.print(randargue4[rnumber]);
    Serial.print(noun);
    Serial.print('\n');
    delay(2000);
    break;
  }
  i++;
  }
}