What is wrong with the following code?int n = 5;int array[5];int i = 3;array[n] = i;
Question
What is wrong with the following code?
int n = 5;
int array[5];
int i = 3;
array[n] = i;
Solution
The issue with the code is that it's trying to access an out-of-bounds index of the array. In C++, array indices start at 0, so an array declared with size 5 has valid indices from 0 to 4.
Here's the code with the issue:
int n = 5;
int array[5];
int i = 3;
array[n] = i;
In the line array[n] = i;
, it's trying to access array[5]
. However, because the array indices start at 0, array[5]
is actually the 6th element of the array, which doesn't exist in this case. This is an out-of-bounds access and can lead to undefined behavior.
To fix the issue, you should ensure that you're only accessing valid indices of the array. For example, you could change n
to a valid index like 4:
int n = 4; // Changed from 5 to 4
int array[5];
int i = 3;
array[n] = i; // Now this is accessing array[4], which is a valid index
Similar Questions
Analyze the following code and choose the correct answer.int[] arr = new int[5];arr = new int[6];
How do you access the fifth element of an array named numbers?numbers[4];numbers[5];numbers[3];numbers[0];
Which of the following is incorrect? Group of answer choicesint[] a = new int[2];All are correctint[][] a = new int[2];int a[] = new int[2];
How many elements are in array matrix (int[][] matrix = new int[5][5])?Group of answer choices14202530
In this following code, what is the value of a[1][1]?int a[5][2] = {{1, 2}, {3, 4}, {5, 6}, {7, 8}, {9, 10}};4231
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.