Write code that will fill the array a (declared below) with numbers typed
in at the keyboard. The numbers will be input five per line, on four lines
(although your solution need not depend on how the input numbers are
divided into lines).
int a[4][5];
PROGRAM CODE:
//Header section
#include <iostream>
using namespace std;
int main()
{
// Declare the 2D array 'a' with dimensions 4 rows and 5 columns.
int a[4][5];
// Nested loops to iterate through each element of the array.
// Outer loop for rows, and inner loop for columns.
for (int i = 0; i < 4; i++) {
for (int j = 0; j < 5; j++) {
// Prompt the user to input a number and store it in the array.
cout << "Enter a number for row " << (i + 1) << ", column " << (j + 1) << ": ";
cin >> a[i][j];
}
}
// Output the filled array to verify the input.
cout << "Array 'a' after input:" << endl;
for (int i = 0; i < 4; i++) {
for (int j = 0; j < 5; j++) {
// Output each element, separated by a space, in the same row.
cout << a[i][j] << " ";
}
// Move to the next row after finishing a row.
cout << endl;
}
return 0;
}
OUTPUT:
Enter a number for row 1, column 1: 10
Enter a number for row 1, column 2: 29
Enter a number for row 1, column 3: 30
Enter a number for row 1, column 4: 40
Enter a number for row 1, column 5: 50
Enter a number for row 2, column 1: 70
Enter a number for row 2, column 2: 99
Enter a number for row 2, column 3: 1
Enter a number for row 2, column 4: 8
Enter a number for row 2, column 5: 9
Enter a number for row 3, column 1: 10
Enter a number for row 3, column 2: 200
Enter a number for row 3, column 3: 50
Enter a number for row 3, column 4: 45
Enter a number for row 3, column 5: 90
Enter a number for row 4, column 1: 88
Enter a number for row 4, column 2: 66
Enter a number for row 4, column 3: 33
Enter a number for row 4, column 4: 22
Enter a number for row 4, column 5: 11
Array 'a' after input:
10 29 30 40 50
70 99 1 8 9
10 200 50 45 90
88 66 33 22 11