Write a C Program to understand how pointer to structure returned from function

By | 21.03.2017

C Program to understand how pointer to structure returned from function


Write a C Program to understand how pointer to structure returned from function. Here’s a Simple Program where we are going to find how  the pointer to structure returned from a function in C Programming Language.

This program is used to store and access “name, roll no. and marks ”  for many students using array of structures members.


C Structure : :


  • C Structure is a collection of different data types which are grouped together and each element in a C structure is called member.
  • If you want to access structure members in C, structure variable should be declared.
  • Many structure variables can be declared for same structure and memory will be allocated for each separately.
  • It is a best practice to initialize a structure to null while declaring, if we don’t assign any values to structure members.

Accessing Structure : : 


C structure can be accessed in 2 ways in a C program. They are,

  1. Using normal structure variable
  2. Using pointer variable

Dot(.) operator is used to access the data using normal structure variable and arrow (->) is used to access the data using pointer variable.


Below is the source code for C Program to understand how pointer to structure returned from function which is successfully compiled and run on Windows System to produce desired output as shown below :


SOURCE CODE : :


/* Program to understand how a pointer to structure is returned from a function */


#include<stdio.h>
#include<string.h>
#include<stdlib.h>
struct student {
                char name[20];
                int rollno;
                int marks;
               };

void display(struct student *);
struct student *func( );
struct student *ptr;


int main( )
{
        struct student *stuptr;
        stuptr = func( );
        display(stuptr);
        free(stuptr);

        return 0;
}


struct student *func( )
{
        ptr = (struct student *) malloc(sizeof(struct student) );
        strcpy( ptr->name, "Joseph");
        ptr->rollno = 15;
        ptr->marks = 98;
        return ptr;
}

void display( struct student *stuptr)
{
        printf("Name  - %s\n", stuptr->name);
        printf("Rollno  - %d\n", stuptr->rollno);
        printf("Marks  - %d\n", stuptr->marks);
}

OUTPUT  : :


//OUTPUT ::


Name  - Joseph
Rollno  - 15
Marks  - 98

If you found any error or any queries related to the above program or any questions or reviews , you wanna to ask from us ,you may Contact Us through our contact Page or you can also comment below in the comment section.We will try our best to reach upto you in the short interval.


Thanks for reading the post….

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About Tunde A

My name is Tunde Ajetomobi, a Tech Enthusiast and Growth Hacker. I enjoy creating helpful content that solves problem across different topics. Codezclub is my way of helping young aspiring programmers and students to hone their skills and find solutions on fundamental programming languages.

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