Question

I need specific codes for this C program assignment. Thank you!

C program question:

Write a small C program connect.c that:

1. Initializes an array id of N elements with the value of the index of the array.

2. Reads from the keyboard or the command line a set of two integer numbers (p and q) until it encounters EOF or CTL - D

3. Given the two numbers, your program should connect them by going through the array and changing all the entries with the same name as p to have the same name as q.

4. Once the EOF has been reached, your program should print the array with a max of 10 positions per line.

5. For testing purposes, define N as 10 at the beginning, but by sure of running data with at least 100 elements.

Deliver your work by either meeting Case-1 or Case-2 requirements given below:

Case 1: The given snapshot in the assignment instructions checks for the following:

• P to be switched with Q (Once done will remain as it is in all the rows)
• If the user enters the same P again, the program must not make any changes

For instance, given elements are 0123456789

3 4          0              0124456789

2 5          1              0154456789 (Keeping the change in Row 0 (input for row 1); 2 is switched to 5)

1 6          2              0654456789 (Keeping the change in row1 (input for row 2); 1 has been replaced with 6)

This implies that for every other row, the input array elements gets changed to its previous row elements.

Case 2: Keep initial array elements to be the input for all the rows of the matrix and make necessary switching.

For instance, given elements are 0123456789

3 4          0              0124456789

2 5          1              0153456789 (Discarding the change in Row 0; 2 is switched to 5)

1 6          2              0623456789

Use any one case to solve the assessment problem and submit the same output before deadlines.

Answer 1

Code in c for Case 1

#include <stdio.h>
#include <string.h>


//Case 1
int main(void)
{
        //declare size;
        const int n = 10;
        //create array
        int arr[n];
        //initia;ize elements of array
        for(int i=0;i<n;i++){
                arr[i]=i;
        }
        //take input from user until end of file
        int p,q;
        while(scanf("%d %d", &p, &q)!=EOF){
                //go through the array and
                //change all the entries with the same name as p to have the same name as q
                for(int i=0;i<n;i++){
                        // replace p qith q
                        if(arr[i]==p){
                                arr[i]=q;
                        }
                }
        }
        //print the array with maximum 10 positions per line
        int pos=0;
        int i=0;
        while(i<n){
                //print a new line on 10 numbers
                if(pos==10){
                        printf("\n");
                        pos=0;
                }
                printf("%d", arr[i]);
                i++;
        }
        printf("\n");
}

Code screenshot for case 1

sample output for case 1

Code in c for Case 2

#include <stdio.h>
#include <string.h>


//Case 1
int main(void)
{
        //declare size;
        const int n = 10;
        //create array
        int arr[n];
        //take input from user until end of file
        int p,q;
        while(scanf("%d %d", &p, &q)!=EOF){
                //initialize array each time we take input
                for(int i=0;i<n;i++){
                        arr[i]=i;
                }
                //no need to go through the entire array as we know arr[i]=i
                //change all the entry with the same name as p to have the same name as q
                arr[p]=q;
        }
        //print the array with maximum 10 positions per line
        int pos=0;
        int i=0;
        while(i<n){
                //print a new line on 10 numbers
                if(pos==10){
                        printf("\n");
                        pos=0;
                }
                printf("%d", arr[i]);
                i++;
        }
        printf("\n");
}

Code screenshot for Case 2

Sample output for Case 2