Authors:
Walter Savitch ,julia Lobur
Chapter:
Arrays
Exercise:
Self-test Exercises
Question:9 | ISBN:9780321531346 | Edition: 7
Question
Write some C++ code that will fill an array a with 20 values of type int read in from the keyboard. You need not write a full program, just the code to do this, but do give the declarations for the array and for all variables.
Answer
PROGRAM CODE:
//Header section
#include <iostream>
using namespace std;
const int ARRAY_SIZE = 20; // Size of the array
//main program
int main()
{
int a[ARRAY_SIZE]; // Declaration of the array
int value; // Variable to hold the input value
//Read input from the user
cout << "Enter " << ARRAY_SIZE << " integer values:\n";
for (int i = 0; i < ARRAY_SIZE; i++) {
cout << "Value " << i + 1 << ": ";
cin >> value;
a[i] = value; // Store the input value in the array
}
//Display output
cout << "Array a:\n";
for (int i = 0; i < ARRAY_SIZE; i++) {
cout << a[i] << " ";
}
cout << endl;
return 0;
}
OUTPUT OF THE PROGRAM CODE:
Enter 20 integer values:
Value 1: 5
Value 2: 10
Value 3: -3
Value 4: 7
Value 5: 2
Value 6: 0
Value 7: -8
Value 8: 15
Value 9: 4
Value 10: 9
Value 11: 12
Value 12: -6
Value 13: 3
Value 14: -1
Value 15: 20
Value 16: 17
Value 17: -9
Value 18: 6
Value 19: 1
Value 20: -5
Array a:
5 10 -3 7 2 0 -8 15 4 9 12 -6 3 -1 20 17 -9 6 1 -5