Question

Devise a C program that reads a number of X integer numbers from an input file (where X is always less than 30), and displays on the screen the K largest numbers in the file. Store the read numbers in a 1 D array of integer values. [ Note: 1D arrays are handled in the same way as 1D arrays of char (strings), e.g., we use indexes to access the elements of the vector. ]

Answer 1

The student is tasked with writing a C program that reads up to 30 integers from a file into a one-dimensional array and displays the K largest numbers. Implementing this involves file operations and a sorting or selection algorithm.

Step-by-step explanation:

The question involves devising a C program that can read a specified number of integer values from an input file, store them in a one-dimensional array, and then display the K largest numbers on the screen. The task is about array manipulation, file input operations, and applying sorting algorithms or selection logic to find the largest elements.

To accomplish this task in C, one could:

• Declare an array to hold up to 30 integers.
• Use file operation functions such as fopen, fscanf, or fclose to read numbers from the file.
• Implement a sorting algorithm like quicksort or a selection algorithm to find the K largest numbers.
• Display these numbers on the screen using a loop.

The program could prompt the user for the value of X (total numbers to read) and K (how many largest numbers to display), or these values could be hard-coded or read from the file as well.