Page 295 - Computer_Science_F5

Computer Science The following C++ Program Example Activity 4.8: 9
4.34 demonstrates an example of a two-
dimensional array. The output is shown
Filling number in the table
in Figure 4.64.
Consider a box of 9 grid divided
FOR ONLINE READING ONLY
Program Example 4.34:
into 3 small boxes as shown in
3
Table 4.17.
Two-dimensional array
Table 4.17: Sudoku tables

#include<iostream> 6 9 4 1
#include<iomanip> 7 1 5 9 6
using namespace std;
int main() 5
{ 2 7 8 9
int i, j, matrix[3][3];
for(i=0; i<3; i++) 6 2 4
for(j=0; j<3; j++) 6 9 8
matrix[i][j]=i*3+j+1;
cout<<”Display an array: “<<endl; 8 3
for(i=0; i<3; i++) 4 7
{
for(j=0; j<3; j++) 5

cout<<setw(2)<<matrix[i][j];
cout<<endl; (a) Fill all blanks where each row and
} column should complete number 1
return 0;
} to 9 without repeating any number.
(b) Write a C++ program using array
that prompts a user to fill the box.
Output:
The program should prompt the
user to enter the given number to
each box and display the completely
filled table.

Exercise 4.15
Figure 4.64: Output of the program
1. Write a C++ program using array
Note: A function setw(2) creates a that allows a teacher to enter the
gap of 2 size between two number of students and their
numbers as it is displayed in marks. Then, the program should
the output. find average class marks and use

286
for Advanced Secondary Schools

Computer Science Form 5.indd 286 23/07/2024 12:34