#include <stdio.h>

int main ()
{
  int i = 1;

  // if-statement:
  if (i == 0) {
    printf ("i is zero\n");
  }


  // if-statement with compound expression:
  if ( (i >= -1) && (i <= 1) ) {
    printf ("-1 <= i <= 1\n");
  }


  // if-else combination
  if (i == 1) {
    printf ("one\n");
  }
  else if (i == 2) {
    printf ("two\n");
  }
  else {
    printf ("larger than two\n");
  }


  // Variation of if-else above:
  if (i == 1) {
    printf ("one\n");
  }
  else {
    if (i == 2) {
      printf ("two\n");
    }
    else {
      printf ("larger than two\n");
    }
  }


  // Equivalent switch statement:
  switch (i) {
    case 1: {
      printf ("one\n");
      break;
    }
    case 2: {
      printf ("two\n");
      break;
    }
    default: {
      printf ("larger than two\n");
    }
  }


  // for-loop example:
  printf ("Numbers 0 through 9: \n");
  for (i=0; i < 10; i++) {
    printf (" %d\n", i);
  }

  
  // while-loop equivalent:
  printf ("Numbers 0 through 9: \n");
  i = 0;
  while (i < 10) {
    printf (" %d\n", i);
    i++;
  }


  // do-while equivalent:
  printf ("Numbers 0 through 9: \n");
  i = 0;
  do {
    printf (" %d\n", i);
    i++;
  } while (i < 10);



  // Example of using "break"
  printf ("Numbers 0 through 9: \n");
  i = 0;
  while (1) {
    if (i == 10) {
      break;
    }
    printf (" %d\n", i);
    i++;
  }
  

  printf ("Odd numbers less than 10:\n");
  i = 0;
  while (1) {
    // If we've reached the limit, break out of the loop.
    if (i == 10) {
      break;
    }

    // If it's an even number, skip to next iteration of loop.
    if (i % 2 == 0) {
      i++;
      continue;
    }

    // Print odd number.
    printf (" %d\n", i);
    i++;
  }


}