Skip to content

Course home

Programming concepts

Programming concepts

EasyMediumHard
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140
Question 86

The program shown in Figure 1 is designed to output 4 randomly selected altitude readings from an array of logged drone flight data, but it contains a logic error.

Identify the line number that contains the logic error, and write the corrected line of code.

Your corrected line must be written in C#.

Figure 1

1  double[] altitudes = { 120.5, 135.2, 142.0, 118.4, 150.1, 128.6, 131.9, 145.3 };
2  int readingsCount = 0;
3  Random rng = new Random();
4  while (readingsCount < 4) {
5      int targetIndex = rng.Next(0, 8);
6      Console.WriteLine(altitudes[readingsCount]);
7      readingsCount = readingsCount + 1;
8  }
[2]
Markscheme

Programming concepts Questions

  1. GCSE
  2. /Computer Science
  3. /Programming concepts

298 exam-style questions on AQA GCSE Computer Science Programming concepts. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank