The sizeof method accepts char * as its argument. int main() { char *cPointer = malloc(sizeof(char *)); } At this point, we must print the value of *cPointer in bytes. printf("Size of the pointer is %lu bytes.\n", sizeof(*cPointer)); Complete Source Code: #include <stdi...
Using an unsigned integer to store a pointer in C
This is not a course for beginners. This is an intermediate level course. Who has the basic knowledge in C programming and what to move to the Advance Level can really interested about pointer can take the course. If you’ve struggled with pointers and have a knowledge gap in this area ...
An Example of Null pointer in C Any pointer that contains a valid memory address can be made as aNULL pointerby assigning0. Example Here, firstlyptris initialized by the address ofnum, so it is not a NULL pointer, after that, we are assigning0to theptr, and then it will become a NU...
Learn: What is the NULL pointer in C language? When NULL pointer requires and what is the value of a NULL Macro? As we have discussed in chapter "Pointers Declarations in C programming language" that a pointer variable stores the address of another variable. But sometimes if we do not ...
piData =malloc(sizeof(int)*10); if(NULL== piData) { //exit } else { //code free(piData);//free after the use } return0; } There is a lot of library function in C where pointer arguments are optional. So passing the null pointer to a function argument is useful when you don...
http://stackoverflow.com/questions/3523145/pointer-arithmetic-for-void-pointer-in-c When a pointer to a particular type (say int, char, float, ..) is incremented, its value is increased by the size of that data type. If a void pointer which points to data of size x is incremented, ...
BufferSize = 99; pBuffer = libpointer('int16Ptr',zeros(BufferSize,1)); Then, begin acquiring data and wait in a loop until it is done: calllib('myLib','AcquireData,BufferSize,pbuffer) while (~calllib('myLib','IsAcquisitionDone') ...
Pointer arithmetic for void pointer in C When a pointer to a particular type (say int, char, float, ..) is incremented, its value is increased by the size of that data type. If a void pointer which points to data of size x is incremented, how does it get to point x bytes ahead?
Note: The size and address of different pointer variables shown in the above examples may vary, as it depends on factors such as CPU architecture and the operating system. However, they will show consistent results. Multilevel Pointers in C (Is a Triple Pointer Possible?) Theoretically, there...