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C Exercises: Print the array elements

C Recursion : Exercise-4 with Solution

Write a program in C to print the array elements using recursion.

Pictorial Presentation:

C Exercises: Print the array elements

Sample Solution:

C Code:

#include <stdio.h>
#define MAX 100

void ArrayElement(int arr1[], int st, int l);
 
int main()
{
    int arr1[MAX];
    int n, i;
	printf("\n\n Recursion : Print the array elements :\n");
	printf("-------------------------------------------\n");
	
	printf(" Input the number of elements to be stored in the array :");
    scanf("%d",&n);
   
    printf(" Input %d elements in the array :\n",n);
    for(i=0;i<n;i++)
        {
	      printf(" element - %d : ",i);
	      scanf("%d",&arr1[i]);
	    }
     
    printf(" The elements in the array are : ");
    ArrayElement(arr1, 0, n);//call the function ArrayElement
    printf("\n\n"); 
    return 0;
}

void ArrayElement(int arr1[], int st, int l)
{
    if(st >= l)
        return;
         
    //Prints the current array element
    printf("%d  ", arr1[st]);
     
    /* Recursively call ArrayElement to print next element in the array */
    ArrayElement(arr1, st+1, l);//calling the function  ArrayElement itself
}

Sample Output:

 Recursion : Print the array elements :                                                                       
-------------------------------------------                                                                   
 Input the number of elements to be stored in the array :6                                                    
 Input 6 elements in the array :                                                                              
 element - 0 : 2                                                                                              
 element - 1 : 4                                                                                              
 element - 2 : 6                                                                                              
 element - 3 : 8                                                                                              
 element - 4 : 10                                                                                             
 element - 5 : 12                                                                                             
 The elements in the array are : 2  4  6  8  10  12 

Flowchart:

Flowchart: Print the array elements

C Programming Code Editor:

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C Programming: Tips of the Day

Static variable inside of a function in C

The scope of variable is where the variable name can be seen. Here, x is visible only inside function foo().

The lifetime of a variable is the period over which it exists. If x were defined without the keyword static, the lifetime would be from the entry into foo() to the return from foo(); so it would be re-initialized to 5 on every call.

The keyword static acts to extend the lifetime of a variable to the lifetime of the programme; e.g. initialization occurs once and once only and then the variable retains its value - whatever it has come to be - over all future calls to foo().

Ref : https://bit.ly/3fOq7XP