C Exercises: Create a new array taking the elements before the element value 5 from a given array of integers

C-programming basic algorithm: Exercise-69 with Solution

Write a C program to create a new array taking the elements before the element value 5 from a given array of integers.

C Code:

#include <stdio.h>
#include <stdlib.h>

// Function prototype for 'print_array'
void print_array(int parray[], int size);

int main(void){ 
    int arr_size;

    // Declaration and initialization of an integer array 'a1'
    int a1[] = {1, 2, 3, 5, 7};
    arr_size = sizeof(a1)/sizeof(a1[0]);

    // Printing the elements of the original array 'a1'
    printf("Elements in original array are: ");  
    print_array(a1, arr_size);

    // Declaration of 'size' variable and an integer array 'pre_ele_5'
    int size = 0;
    int pre_ele_5[arr_size];

    // Loop to find the position of the first occurrence of 5 in 'a1'
    for (int i = 0; i < arr_size; i++)
    {
        if (a1[i] == 5)
        {
            size = i;
            break;
        }
    }

    // Declaration and initialization of 'result' array using the 'size' variable
    int result[size];

    // Loop to copy elements from 'a1' to 'result' up to the position of the first 5
    for (int j = 0; j < size; j++)
    {
        result[j] = a1[j];
    }

    // Updating 'arr_size' to reflect the size of the 'result' array
    arr_size = sizeof(result)/sizeof(result[0]);                

    // Printing the elements of the new array 'result'
    printf("\nElements in new array are: ");  
    print_array(result, arr_size);
}     

// Definition of the 'print_array' function
void print_array(int parray[], int size)
{
    int i;      
    // Loop to print the elements of the array
    for( i = 0; i < size - 1; i++)  
    {  
        printf("%d, ", parray[i]);  
    } 
    // Printing the last element
    printf("%d ", parray[i]);  
    printf("\n");   
}

Sample Output:

Elements in original array are: 1, 2, 3, 5, 7 

Elements in new array are: 1, 2, 3

Pictorial Presentation:

Flowchart:

C Programming Code Editor:

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