What is the correct syntax for using the indirection operator to print the value pointed to by a pointer ptr?

The correct syntax for using the indirection operator to print the value pointed to by a pointer ptr is:

printf("%d", *ptr);

Here's the step by step explanation:

1. printf is a function in C language that is used to print the value on the console.

2. The %d inside the printf function is a format specifier. It tells the printf function that the data to be printed is an integer.

3. *ptr is where the indirection operator (*) is used. The indirection operator is used to access the value stored in the memory location pointed to by the pointer. So, *ptr gives the value pointed to by the pointer ptr.

4. Therefore, printf("%d", *ptr); will print the value that ptr is pointing to.