Reverse the array if arr[]={1,2,3,4} then the output should be {4,3,2,1}
#include <stdio.h>
void arrayRev(int size, int arr[size])
{
// copying reverse of an array to another array
int store = size - 1;
int arr2[size];
for (int i = 0; i < size; i++)
{
arr2[store] = arr[i];
store--;
}
for (int i = 0; i < size; i++)
{
printf("%d,", arr2[i]);
}
// int arr2[];
}
int main()
{
int arr[] = {1, 2, 3, 4, 5, 6, 67};
int size = sizeof(arr) / sizeof(int);
// printf("%d", size);
arrayRev(size, arr);
return 0;
}
#include <stdio.h>
void arrayRev(int arr[])
{
// we will do swaping- will swap 0 index with last index then so on
int temp;
for (int i = 0; i < 7 / 2; i++)
{
// swap item arr[i] with item arr[6-i]
temp = arr[i];
arr[i] = arr[6 - i];
arr[6 - i] = temp;
// if this runs for whole then it won't change anything cuse it will redo it.
// so we have to stop it int middle for that we do i<7/2
}
}
void printArr(int arr[])
{
for (int i = 0; i <<7; i++)
{
printf("The value of element %d is %d\n", i, arr[i]);
}
}
int main()
{
int arr[] = {1, 2, 3, 4, 5, 6, 67};
printf("\n Before reversing the array\n");
printArr(arr);
arrayRev(arr);
printf("\n After reversing the array\n");
printArr(arr);
return 0;
}
In my program I have used two arrays but here harry have used only one array and have done swapping