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creturn

Return with no expression

How does return work exactly?

I found the below code and am confused how it works.

You can see in the if (n==1) statement the return has no value next to it.

void bubbleSort(int arr[], int n) {
   // Base case 
    if (n == 1) 
        return; 
    for (int i=0; i<n-1; i++) 
        if (arr[i] > arr[i+1]) 
            swap(arr[i], arr[i+1]); 
   return  bubbleSort(arr,n-1);
}

How does the return keyword work in instances such as this?

Solution

  • Basicly this function is recursive and if its void it can't return value so it's just flag to stop function