Multidimensional Arrays. McGraw-Hill The Complete Reference Fourth Edition

C h a p t e r 4 : A r r a y s a n d N u l l - T e r m i n a t e d S t r i n g s

101

To better understand how string arrays work, study the following short program, which uses a string array as the basis for a very simple text editor:

/* A very simple text editor. */

#include <stdio.h>

#define MAX 100

#define LEN 80 char text[MAX][LEN]; int main(void)

{ register int t, i, j; printf("Enter an empty line to quit.\n"); for(t=0; t<MAX; t++) { printf("%d: ", t); gets(text[t]); if(!*text[t]) break; /* quit on blank line */

} for(i=0; i<t; i++) { for(j=0; text[i][j]; j++) putchar(text[i][j]); putchar('\n');

}

} return 0;

This program inputs lines of text until a blank line is entered. Then it redisplays each line one character at a time.

Multidimensional Arrays

C/C++ allows arrays of more than two dimensions. The exact limit, if any, is determined by your compiler. The general form of a multidimensional array declaration is

type name[Size1][Size2][Size3]. . .[SizeN];