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Magazine Chapter 9: Problem 30
Write the definition of ptr, a constant pointer to an int.
Short Answer
Expert verified
To define a constant pointer to an integer in C++, first, declare an integer variable and then write a constant pointer definition initializing it with the address of the integer variable.
1. Declare an integer variable, for example 'x':
```cpp
int x = 10;
```
2. Define the constant pointer 'ptr' initialized with the address of 'x':
```cpp
int *const ptr = &x
```
The resulting code is:
```cpp
int x = 10;
int *const ptr = &x
```
Here, 'ptr' will point to the integer variable 'x' and will not be able to point to any other variable since it is a constant pointer.
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