Arrays and Their Operations

Flashcards based on lecture notes covering the key concepts of arrays and their operations in C programming.

What must an array's index be in C programming?

An array's index must be of integer type.

How can a two-dimensional array be accessed in C?

Elements in a two-dimensional array can be accessed using a[row][column] notation.

What is the common structure of a for loop used for iterating through an array?

for (i = 0; i < numElements; ++i) { // Loop body accessing myArray[i] }

What is the method to calculate the sum of the elements of an array?

You can compute the sum by iterating through the array and adding each element.

How can you initialize an array in C?

Array elements can be initialized in their declaration statements with values in braces.

What operations can be performed on arrays?

Common operations include reversing elements, sorting, calculating sums and averages, and checking for specific values.

What does the declaration 'int a[3][4];' signify?

This declares a two-dimensional array with 3 rows and 4 columns.

What action does the program prompt the user to do in the 2-dimensional array practice?

Prompt the user to enter a position and a character to store in that position until all positions are filled.

How many integer values does the loop in the provided program ask the user to enter?

The program prompts the user to enter 8 integer values.

What is the significance of the expression 'oldestPeople[nthPerson - 1]' in array indexing?

It allows quick access to the Nth oldest person's age using a calculated index.