Why Do We Need Array Size as an Argument?
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Why is it necessary to provide the size of the array as an additional argument when using dynamic arrays? The crucial factor is that technically, we are passing not the entire array but the pointer to its first value.
Remember
The compiler does not have information about the size of the array, which can lead to accessing memory beyond the array's boundaries, resulting in unexpected garbage values.
Let's solve a simple task to illustrate it:
- Pass the dynamic array as the first argument of the function.
- Call the function inside the
main()block and pass the pointer at the first element of the array as the first argument.
Look at the result! Pay attention to the last two values!
Løsning
solution.cpp
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Swipe to start coding
Why is it necessary to provide the size of the array as an additional argument when using dynamic arrays? The crucial factor is that technically, we are passing not the entire array but the pointer to its first value.
Remember
The compiler does not have information about the size of the array, which can lead to accessing memory beyond the array's boundaries, resulting in unexpected garbage values.
Let's solve a simple task to illustrate it:
- Pass the dynamic array as the first argument of the function.
- Call the function inside the
main()block and pass the pointer at the first element of the array as the first argument.
Look at the result! Pay attention to the last two values!
Løsning
solution.cpp
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