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Quiz on Arrays in C

Quiz on Arrays in C

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Question 1 of 10

1. Question

What is an array in C?

A special data type
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A function that stores data
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A collection of variables of different types
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A collection of variables of the same type stored in continuous memory
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Question 2 of 10

2. Question

Which of the following is a correct way to declare an integer array of size 5?

int arr[5];
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int arr = [5];
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array int arr(5);
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arr int[5];
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Question 3 of 10

3. Question

What is the index of the first element in a C array?

1
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0
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-1
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It depends on the array size
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Question 4 of 10

4. Question

float marks[10];

9
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10
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11
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0
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Question 5 of 10

5. Question

Which of the following correctly assigns the value 25 to the third element of an array arr?

arr(3) = 25;
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arr[2] = 25;
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arr[3] = 25;
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arr = 25[2];
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Question 6 of 10

6. Question

What happens if you access an array index that is out of range?

It gives a warning
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The program skips that line
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It causes unpredictable behavior or crashes
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It automatically resizes the array
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Question 7 of 10

7. Question

int nums[3] = {10, 20, 30};
printf(“%d”, nums[1]);

10
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20
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30
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1
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Question 8 of 10

8. Question

Which of the following initializes all elements of an integer array to 0?

int a[5] = {0};
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int a = {0, 0, 0, 0, 0};
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int a[5] = 0;
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int a = 0[5];
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Question 9 of 10

9. Question

int a[4] = {1, 2};
printf(“%d”, a[3]);

0
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1
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2
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Garbage value
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Question 10 of 10

10. Question

Can the size of a C array be changed during program execution?

Yes, always
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No, it’s fixed at declaration
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Only if the array is global
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Only inside loops
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