how to reverse array in c Language?

To reverse an array in C, you can swap the elements in the array starting from the two ends and working towards the middle. Here is an example function that reverses an array of integers:

c
void reverseArray(int arr[], int size) 
{ 
int i, temp; 
for (i = 0; i < size/2; i++) 
{ 
 temp = arr[i]; 
 arr[i] = arr[size-1-i]; 
 arr[size-1-i] = temp; 
 } 
}

In the above code, arr is the array to be reversed, and size is the number of elements in the array. The function uses a for loop to iterate over the first half of the array, swapping each element with its corresponding element from the end of the array.

You can call this function with an array and its size as arguments to reverse the array in place:

c
int main() 
{ 
int arr[] = {1, 2, 3, 4, 5}; 
int size = sizeof(arr)/sizeof(int); 
 reverseArray(arr, size);
  // Now arr is {5, 4, 3, 2, 1} 
return 0; 
}

In the above code, the reverseArray function is called with arr and size as arguments to reverse the elements in the array in place.