C++ Arrays & Pointers Quiz

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Test your pointer-array mastery

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Shini Saji

India

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Froggy Jumps C++ Arrays & Pointers QuizVersión en línea Test your pointer-array mastery por Shini Saji 1 Which statement correctly declares an array of 10 integers in C++? a int* arr[10]; b int arr(10); c int arr[10]; 2 What does the expression &arr[i] typically yield when arr is an array? a Value of the i-th element b Pointer to the array start c Address of the i-th element 3 Which of the following prints the second element of int a[5]? a std::cout << a[1]; b std::cout << a++; c std::cout << (a+2); 4 What does the name of an array decay to in most expressions? a Length of the array b Copy of the array c Pointer to its first element 5 Which is true about a pointer p assigned to an array name? a p holds the array length b p points to a copy of the array c p points to the first element of the array 6 Which expression accesses the last element of an array a of size N? a a[N] b a[N-1] c (a+N) 7 What is the result of ptr when ptr points to the first element of an int array? a Copy of the array b Value of the first element c Address of the array 8 Which is a valid way to iterate an array with a pointer? a for(int i=0;i<=n;i++) { cout << (p+i);} b for(int i=0; i c for(int p = &a[0]; p <= &a[N]; ++p) { ... } 9 Which error occurs if you access a[5] in int a[5]? a Null pointer dereference b Type mismatch error c Out-of-bounds access

Froggy Jumps

C++ Arrays & Pointers QuizVersión en línea

Test your pointer-array mastery

por Shini Saji

Which statement correctly declares an array of 10 integers in C++?

int* arr[10];

int arr(10);

int arr[10];

What does the expression &arr[i] typically yield when arr is an array?

Value of the i-th element

Pointer to the array start

Address of the i-th element

Which of the following prints the second element of int a[5]?

std::cout << a[1];

std::cout << *a++;

std::cout << *(a+2);

What does the name of an array decay to in most expressions?

Length of the array

Copy of the array

Pointer to its first element

Which is true about a pointer p assigned to an array name?

p holds the array length

p points to a copy of the array

p points to the first element of the array

Which expression accesses the last element of an array a of size N?

a[N]

a[N-1]

*(a+N)

What is the result of *ptr when ptr points to the first element of an int array?

Copy of the array

Value of the first element

Address of the array

Which is a valid way to iterate an array with a pointer?

for(int i=0;i<=n;i++) { cout << *(p+i);}

for(int i=0; i

for(int* p = &a[0]; p <= &a[N]; ++p) { ... }

Which error occurs if you access a[5] in int a[5]?

Null pointer dereference

Type mismatch error

Out-of-bounds access

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C++ Arrays & Pointers Quiz

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C++ Arrays & Pointers QuizVersión en línea

por Shini Saji

Which statement correctly declares an array of 10 integers in C++?

What does the expression &arr[i] typically yield when arr is an array?

Which of the following prints the second element of int a[5]?

What does the name of an array decay to in most expressions?

Which is true about a pointer p assigned to an array name?

Which expression accesses the last element of an array a of size N?

What is the result of *ptr when ptr points to the first element of an int array?

Which is a valid way to iterate an array with a pointer?

Which error occurs if you access a[5] in int a[5]?

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