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Student newStudent = { "C0681008","Cao Anh Huy", 8.50,{1, 2, 1985} };

Notice how we include the initialization values in curly brackets, just like when we initialize an array. Furthermore, we include the values for any nested structure type (in this case the dateOfBirth member is a nested structure), in a further set of curly brackets.

Copying structure variables

One of the most convenient features of structures is that we can copy them in a single assignment operation. This is unlike an array, which must be copied item-by-item. The name of a structure variable when it appears on its own represents the entire structure. If a structure contains an array as a member, that array is copied if the entire structure is copied.

Student newStudent1, newStudent2; // Get the values for newStudent2... // Copy newStudent2's value to newStudent1newStudent1 = newStudent2;

Comparing values of structures

We cannot compare structures in a single operation. If we wish to compare the values of two structure variables, we need to compare each of their members.

Arrays of structures

Just as we can have an array of basic data types, we can also have an array of structures. Suppose that we created an array of Student structures as follows. We could then copy newStudent into each position in the array.

Student students[100];Student newStudent; int i;for (i=0; i<100; i++) {// Get the values for newStudent ...// Copy into the next position in the array students[i]= newStudent; }

Operations on structures

Passing structures to and from functions

Structures can be passed to functions just like any other data type. Functions can also return structures, just as they can return any basic type. Structures can be also be passed to functions by reference.

Just like passing variable of a basic data type, when we pass a structure as an argument to a function, a copy is made of the entire structure. Structures are passed by value. We can easily take the code that output a student and put it into a function as follows.

void outputStudent(Student stu) {printf("Student Details\n"); printf("Identification: %s\n", stu.studentID);printf("Name: %s\n", stu.name); printf("Mark: %.2f\n, stu.markCS);printf("Date of Birth: %i/%i/%i\n", stu.dateOfBirth.day,stu.dateOfBirth.month, stu.dateOfBirth.year); }

If we had an array of 100 students and wanted to output them this would be straightforward:

Student students[100];int i; ...for (i=0; i<100; i++) { outputStudent(students[i]); }

We could similarly place the code to input a student into a function, but now we have a problem. The function can return a structure of type Student as follows.

Student inputStudent() {Student tempStudent; printf("Enter Student identification: ");scanf("%s",&tempStudent.studentID); printf("Enter Student name: ");fflush(stdin);gets(tempStudent.name); printf("Enter final mark: ");scanf("%f",&tempStudent.markCS); printf("Enter birth date (dd/mm/yyyy):");scanf("%i/%i/%i",&tempStudent.dateOfBirth.day,&tempStudent.dateOfBirth.month,&tempStudent.dateOfBirth.year );return tempStudent; }

Questions & Answers

what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
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Source:  OpenStax, Introduction to computer science. OpenStax CNX. Jul 29, 2009 Download for free at http://cnx.org/content/col10776/1.1
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