Totalling & Counting | Computer for GCSE/IGCSE - Year 11 PDF Download

Totalling

• Totalling entails the accumulation of values, typically performed within a loop.
• A total variable can be set to zero initially and then modified within a loop, for instance:

Pseudocode example:
total ← 0
for i ← 1 to 10
input num
total ← total + num
next i
output total

Python example:
total = 0
for i in range(1, 11):
num = int(input("Enter a number: "))
total += num
print("Total:", total)

Java example:
int total = 0;
Scanner scanner = new Scanner(System.in);
for (int i = 1; i <= 10; i++) {
System.out.print("Enter a number: ");
int num = scanner.nextInt();
total += num;
}
System.out.println("Total: " + total);

Visual Basic example:
Dim total As Integer = 0
For i As Integer = 1 To 10
Console.Write("Enter a number: ")
Dim num As Integer = Integer.Parse(Console.ReadLine())
total += num
Next i
Console.WriteLine("Total: " & total)

Counting

• Counting entails monitoring the frequency of a specific event.
• A count variable can start at zero and then be adjusted within a loop, like so:

Pseudocode example:
count ← 0
for i ← 1 to 10
input num
if num > 5 then
ount ← count + 1
end if
next i
output count

Python example:
count = 0
for i in range(1, 11):
num = int(input("Enter a number: "))
if num > 5:
count += 1
print("Count:", count)

Java example:
int count = 0;
Scanner scanner = new Scanner(System.in);
for (int i = 1; i <= 10; i++) {
System.out.print("Enter a number: ");
int num = scanner.nextInt();
if (num > 5) {
count++;
}
}
System.out.println("Count: " + count);

Visual Basic example:
Dim count As Integer = 0
For i As Integer = 1 To 10
Console.Write("Enter a number: ")
Dim num As Integer = Integer.Parse(Console.ReadLine())
If num > 5 Then
count += 1
End If
Next i
Console.WriteLine("Count: " & count)