Page 293 - Computer_Science_F5

Computer Science referenced. An array should be specified Examples of declared array are:
by its name and index. Instead of
int a[5];
declaring each variable separately, an
double sum[7];
array is used. Each index must be within
square brackets. Array can be classified Initialisation of one dimensional array
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into two types: One dimensional array
and Multidimensional array. Array initialisation means introducing
values to the arrays. The following is the
syntax of array initialisation:
One dimensional array dataType arrayName[arraySize] =
One dimensional array is the type of {value0, value1, value3, …….., valuek}
array that involve one array name and
only one subscript. Example: int marks[5] = {10, 35, 77,
98, 100};
Declaration of one-dimensional array The given example of initialisation can
An array can be declared using the syntax: also be defined as:
dataType arrayName[arraySize]; int marks[5];
where: marks[0] = 10;
(a) dataType represents the data type
of all elements; marks[1] = 35;
(b) arraySize must be an integer greater marks[2] = 77;
than zero; and marks[3] = 98;
(c) arrayName must be a character or
any word to represent an array. marks[4] = 100;

The following C++ Program Example 4.33 uses array to print the sum of five
integers. The output of the program is shown in Figure 4.63.

Program Example 4.33:

Using array to print the sum of integers

#include<iostream>
#include<conio.h>
using namespace std;
int main()
{
int a[5], sum = 0, i;
cout<<”Enter 5 integers to store in array”<<endl;
for(i=0; i<5; i++)
{
cin>>a[i];
sum = sum+a[i];
}
cout<<”The sum of the given numbers is: “<<sum<<endl;
return 0;
}

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Computer Science Form 5.indd 284 23/07/2024 12:34