Reversing a string using pointers

In this recipe, we will learn to reverse a string using pointers. The best part is that we will not reverse the string and copy it onto another string, but we will reverse the original string itself.

How to do it…

1. Enter a string to assign to the str string variable as follows:

printf("Enter a string: ");
scanf("%s", str);

2. Set a pointer to point at the string, as demonstrated in the following code. The pointer will point at the memory address of the string's first character:

ptr1=str;

3. Find the length of the string by initializing an n variable to 1. Set a while loop to execute when the pointer reaches the null character of the...