Question: 2. Write a program in C to calculate the length of the string using a pointer. Test Data: Input a string: hello Expected Output: The

2. Write a program in C to calculate the length of the string using a pointer. Test Data: Input a string: hello Expected Output: The length of the given string hello is: 5 3. Write a program in C to swap elements using function by reference. You need to create a function and swap the elements in the function subroutine. in your main function you need to call the function like this: swapNumbers(&ptrl , &ptr2); Test Data: Input the value of 1st element: 5 Input the value of 2nd element: 6 Expected Output: The values before swapping are: Element 1 = 5 Element 2 = 6 The values after swapping are: Element 1 = 6 Element 2 = 5

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