Thread: Pointer to Array Example

in the example that i took from the deitels book, i could not understand why do we print the sentence[1] can you help me about that dont we have to use sentence[0] instead of sentence[0]?
thanks in advance.

Code:

#include <stdio.h>#include <stdlib.h>
#include <time.h>
#include <string.h>
#include <ctype.h>

int main()
{
  /* initialize 4 arrays of char pointers */
  char *article[] = { "the", "a", "one", "some", "any" };
  char *noun[] = { "boy", "girl", "dog", "town", "car" };
  char *verb[] = { "drove", "jumped", "ran", "walked", "skipped" };
  char *preposition[] = { "to", "from", "over", "under", "on" };
  char sentence[100] = "";      /* completed sentence */

  srand(time(NULL));

  /* create 20 sentences */
  for (int i = 1; i <= 20; i++) {

    /* randomly choose pieces of sentence */
    strcat(sentence, article[rand() % 5]);
    strcat(sentence, " ");

    strcat(sentence, noun[rand() % 5]);
    strcat(sentence, " ");

    strcat(sentence, verb[rand() % 5]);
    strcat(sentence, " ");
    strcat(sentence, preposition[rand() % 5]);
    strcat(sentence, " ");

    strcat(sentence, article[rand() % 5]);
    strcat(sentence, " ");

    strcat(sentence, noun[rand() % 5]);

    /* capitalize first letter and print sentence */
    putchar(toupper(sentence[0]));
    printf("%s.\n", &sentence[1]);
    sentence[0] = '\0';
  }                             /* end for */

  return 0;                     /* indicate successful termination */
}

Notice the putchar before that, i.e., the first character is printed separately after being transformed to uppercase.