Starting Out with C++ from Control Structures to Objects, Student Value Edition (9th Edition)
9th Edition
ISBN: 9780134443829
Author: Tony Gaddis
Publisher: PEARSON
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Chapter 7, Problem 47RQE
Program Plan Intro
Two-dimensional array:
A two dimensional array is also called as a multi-dimensional array; a multidimensional array is that all the identical arrays are put together into a single array.
- This is useful for storing same type of multiple sets of data in same place.
- The main advantage is that one-dimensional array can hold only one set of value whereas two-dimensional array can hold multiple sets of data in the form of rows and columns.
- The structure of a multi-dimensional array is lookalike a table (that is combination of rows and columns); it contains same type of columns.
Syntax:
The syntax of two dimensional arrays is as follows:
datatype array_name [number_of_rows][number_of_columns];
Analyzing the given array definition:
Consider the given array definition:
//Declare the two-dimensional array
int numberArray[9][11];
The above code illustrates that the declaration of a two dimensional array named “numberArray” which holds “6” rows and “4” columns; so totally the array can hold “99” elements (that is
- The index number representation for the “99” elements are as follows:
| C1 | C2 | C3 | C4 | C5 | C6 | C7 | C8 | C9 | C10 | C11 | |
| R1 | (0,0) | (0,1) | (0,2) | (0,3) | (0,4) | (0,5) | (0,6) | (0,7) | (0,8) | (0,9) | (0,10) |
| R2 | (1,0) | (1,1) | (1,2) | (1,3) | (1,4) | (1,5) | (1,6) | (1,7) | (1,8) | (1,9) | (1,10) |
| R3 | (2,0) | (2,1) | (2,2) | (2,3) | (2,4) | (2,5) | (2,6) | (2,7) | (2,8) | (2,9) | (2,10) |
| R4 | (3,0) | (3,1) | (3,2) | (3,3) | (3,4) | (3,5) | (3,6) | (3,7) | (3,8) | (3,9) | (3,10) |
| R5 | (4,0) | (4,1) | (4,2) | (4,3) | (4,4) | (4,5) | (4,6) | (4,7) | (4,8) | (4,9) | (4,10) |
| R6 | (5,0) | (5,1) | (5,2) | (5,3) | (5,4) | (5,5) | (5,6) | (5,7) | (5,8) | (5,9) | (5,10) |
| R7 | (6,0) | (6,1) | (6,2) | (6,3) | (6,4) | (6,5) | (6,6) | (6,7) | (6,8) | (6,9) | (6,10) |
| R8 | (7,0) | (7,1) | (7,2) | (7,3) | (7,4) | (7,5) | (7,6) | (7,7) | (7,8) | (7,9) | (7,10) |
| R9 | (8,0) | (8,1) | (8,2) | (8,3) | (8,4) | (8,5) | (8,6) | (8,7) | (8,8) | (8,9) | (8,10) |
With the help of assignment operator “=”, the value can be easily assigned to an array.
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Chapter 7 Solutions
Starting Out with C++ from Control Structures to Objects, Student Value Edition (9th Edition)
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