Question

Write a C Program that inputs an array of integers from the user along-with the length of array. The program then prints out the array of integers in reverse. (You do not need to change (re-assign) the elements in the array, only print the array in reverse.) The program uses a function call with array passed as call by reference. Part of the Program has been given here. You need to complete the Program by writing the function.

#include<stdio.h>
void reverse(int *, int*);
int main()
{
int arr[50], num, *p;
printf("Enter number of elements:\n");
scanf("%d",&num);
printf("Enter the elements of an array:\n");
for(int i=0;i<num;i++)
{
scanf("%d",&arr[i]);
}
fflush(stdin);
reverse(arr, &num);

}
/*function to print the array of integers in reverse */
void reverse(int *arr, int *n)
{
// insert code
}

Answer 1

C code:

#include<stdio.h>
void reverse(int *, int*);
int main()
{
   int arr[50], num, *p;
   printf("Enter number of elements:\n");
   scanf("%d",&num);
   printf("Enter the elements of an array:\n");
   for(int i=0;i<num;i++)
   {
       scanf("%d",&arr[i]);
   }
   reverse(arr, &num);
}
/*function to print the array of integers in reverse */
void reverse(int *arr, int *n){
     int t=*n;
     printf("Printing array elements in reverse order \n");
     for(int i=t-1;i>=0;i--)
        printf("%d ",arr[i]);
}

Execution screenshots: