Question

Create a program in C that performs the following tasks:

• Define a macro arraySize of size n
• Create two arrays of size n.
• Pass these arrays to a function fillArrays that randomizes enough integers between 1-100 (inclusive) to fill both arrays.
• Print both of these arrays.
• Pass the filled arrays to a second function mergeArrays that creates a third array of size 2n.
• Still in mergeArrays, store the values from the original two arrays into your new array in reverse.
• Print out your sorted array.

Answer 1

#include <stdio.h>

#include <stdlib.h>

#include <time.h>

#define ARRAY_SIZE 10

void mergeArrays( int *var1, int *var2)

{

int n1= 2*ARRAY_SIZE; //To double the size of new array

int arrnew[n1];

int x1 = ARRAY_SIZE; //To process 2nd array from newarray's index n, bcz there are already n elements.

int index = 0;

for(int i = ARRAY_SIZE-1 ; i>=0 ;--i){

arrnew[index++] = var2[i];

}

for(int i = ARRAY_SIZE-1 ; i>=0 ;--i){

arrnew[index++] = var1[i];

}

//To sort an array

for (int i = 0; i < n1; ++i)

{

for (int j = i + 1; j < n1; ++j)

{

if (arrnew[i] > arrnew[j])

{

int tempval = arrnew[i];

arrnew[i] = arrnew[j];

arrnew[j] = tempval;

}

}

}

//To print new sorted array

printf("\nValues in new sorted array are:");

for(int x=0; x<n1; x++)

{

printf("%d ", arrnew[x]);

}

printf("\n");

printf("\n");

}

void fillArray(int arr[]){

for (int i=0;i<ARRAY_SIZE;i++){

//To generate random number within 100

int randno =rand() % 100 + 1; //Includes 1 and 100

arr[i]=randno;

}

}

int main()

{

//Variable declarations

int arr1[ARRAY_SIZE]; //array1

int arr2[ARRAY_SIZE]; //array2

int min,max,randno; //To generate random number

//The srand() function sets its argument as the seed for a new sequence of pseudo-random integers to be returned by rand()

srand (time(NULL) );

fillArray(arr1);

//Fill array with random number

printf("Values in array1 are:");

for(int x=0; x<ARRAY_SIZE; x++)

{

printf("%d ",arr1[x]) ;

}

printf("\n");

fillArray(arr2);

//Fill array with random number

printf("Values in array2 are:");

for(int x=0; x<ARRAY_SIZE; x++)

{

printf("%d ",arr2[x]) ;

}

printf("\n");

//Call merge array fuction to merge and sort array

mergeArrays(arr1, arr2);

return 0;

}

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SEE OUTPUT

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