How do you reverse a string in place in C or C++?

Question

How do you reverse a string in C or C++ without requiring a separate buffer to hold the reversed string?

Answer 1

If you don't need to store it, you can reduce the time spent like this:

void showReverse(char s[], int length)
{
    printf("Reversed String without storing is ");
    //could use another variable to test for length, keeping length whole.
    //assumes contiguous memory
    for (; length > 0; length--)
    {
        printf("%c", *(s+ length-1) );
    }
    printf("\n");
}