A pointer is an address, means it is a numerical value. Hence, arithmetic operation can be done on a pointer. There are four operations that can be done on a pointer. Those are: 1. Increment (++) and Decrement (- -)2. Addition of any integer to pointer (+)3. Subtraction of any integer from pointer (-)4. Subtracting […]
Increment and Decrement of a Pointer (Pointer Arithmetics) in C Read More »
A pointer is an address, means it is a numerical value. Hence, arithmetic operation can be done on a pointer. There are four operations that can be done on a pointer. Those are: 1. Increment (++) and Decrement (–)2. Addition of any integer to pointer (+)3. Subtraction of any integer from pointer (-)4. Subtracting two
Addition and Subtraction of a Pointer (Pointer Arithmetics) in C Read More »
Typecasting is used to change a variable to a different type for a particular operation. We need to specify the type of the data whose address a pointer will hold, though all pointers are similar as they hold the addresses. The amount of space required by a pointer to store the address depends on the
When an array is declared in a c program actually a pointer is declared unknowingly. If we declare an array int a[5]. Basically, we are declaring a pointer ‘a’ that points to the first element of the array. It is carrying the base address (address of a[0]) of the array. So, we can say that
When we pass a pointer as an argument to a function instead of any variable, then instead of value the the address of the variable is passed. In call by address the changes that taking places are permanently made in the address of the passed variable. Hence the changes that taking place in the called
Call by address – Passing pointer in a function in C Read More »
The Pointer in C, is a variable that can store address of another variable of same datatype. The pointer is used to save memory space and get faster execution time. Pointers are considered as the most useful tools in computer program for the following reasons: 1. Using a pointer makes a program very simple and
We need to specify the type of the data whose address a pointer will hold, though all pointers are similar as they hold the addresses. The amount of space required by a pointer to store the address depends on the machine whether it is 32 bit or 64 bit. Suppose we have a pointer named
Why it is not possible to store an integer address in a float pointer in C? Read More »
Pointers are used to store the address of other variables of similar datatype. But if you want to store the address of a pointer variable, then you again need a pointer to store it. Thus, when one pointer variable stores the address of another pointer variable, it is known as Pointer to Pointer variable or Double Pointer. [ Pointer2(address of
Data types in c refer to an extensive system used for declaring variables or functions of different types. The type of a variable determines how much space it occupies in storage. Example: int 2/4 bytes, char 1 bytes, short 2 bytes The Data type is needed when dereferencing the pointer, so it knows how much
When writing an application, developers typically include pointers to a variety of data objects. In some scenarios, the developer may accidentally use a pointer to an invalid or deallocated object, causing the application to enter an unintended execution flow. This usually causes the application to crash, but can result in far more dangerous behavior. This
