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C program to merge Two One Dimensional Arrays elements

mahmoud2506
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2022-05-04
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C program to merge Two One Dimensional Arrays elements

This program will read Two One Dimensional Array of same data type (integer type) and merge them into another One Dimensional Array of same type.

To merge array elements we have to copy first array's elements into third array first then copy second array's elements into third array after the index of first array elements.

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mahmoud2506
2022-05-04
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Merge Two One Dimensional Arrays using C program

/*Program to merge two arrays*/
#include <stdio.h>

/** funtion :   readArray() 
    input   :   arr ( array of integer ), size 
    to read ONE-D integer array from standard input device (keyboard). 
**/
void readArray(int arr[], int size)
{
    int i = 0;

    printf("\nEnter elements : \n");

    for (i = 0; i < size; i++) {
        printf("Enter arr[%d] : ", i);
        scanf("%d", &arr[i]);
    }
}

/** funtion :   printArray() 
    input   :   arr ( array of integer ), size 
    to display ONE-D integer array on standard output device (moniter). 
**/
void printArray(int arr[], int size)
{
    int i = 0;

    printf("\nElements are : ");

    for (i = 0; i < size; i++) {
        printf("\n\tarr[%d] : %d", i, arr[i]);
    }
    printf("\n");
}

void merge(int arr1[], int size1, int arr2[], int size2, int arr3[])
{
    int i = 0, j = 0;

    for (i = 0; i < size1; i++)
        arr3[i] = arr1[i];

    for (i = 5, j = 0; i < size2 + 5; i++, j++)
        arr3[i] = arr2[j];
}

int main()
{
    int arr1[5];
    int arr2[5];
    int arr3[10];

    readArray(arr1, 5);
    readArray(arr2, 5);

    merge(arr1, 5, arr2, 5, arr3);

    printArray(arr3, 10);

    return 0;
}

Output:

    Enter elements : 
    Enter arr[0] : 12 
    Enter arr[1] : 23 
    Enter arr[2] : 34 
    Enter arr[3] : 45 
    Enter arr[4] : 56 

    Enter elements : 
    Enter arr[0] : 11 
    Enter arr[1] : 22 
    Enter arr[2] : 33 
    Enter arr[3] : 44 
    Enter arr[4] : 55 

    Elements are : 
	    arr[0] : 12 
	    arr[1] : 23 
	    arr[2] : 34 
	    arr[3] : 45 
	    arr[4] : 56 
	    arr[5] : 11 
	    arr[6] : 22 
	    arr[7] : 33 
	    arr[8] : 44 
	    arr[9] : 55

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One Dimensional Array Programs / Examples in C programming language
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