C PROGRAMMING PROGRAM • STRUCTURES, UNIONS & ENUMS

Access Structure Members Through a Pointer

Learn how to access structure members through a pointer using a clear C program.

BeginnerStructure pointerArrow operatorAddress

PROBLEM UNDERSTANDING

Input and expected output

Sample input

No input required

Sample output

C Fundamentals costs 450.00

COMPLETE C PROGRAM

Complete C implementation

#include <stdio.h>

struct Book { char title[40]; double price; };

int main(void)
{
    struct Book book = {"C Fundamentals", 450.0};
    struct Book *pointer = &book;
    printf("%s costs %.2f\n", pointer->title, pointer->price);
    return 0;
}

CURRENT STEP

Select Start to walk through the important lines.

SELECTED LINE

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EXPECTED OUTPUT FOR THE SAMPLE

C Fundamentals costs 450.00

0%Step 0 of 0

PROGRAM EXPLANATION

Algorithm and explanation

Read the required input values.
Store the structure address and use the arrow operator to reach its members.
Display the computed result.

Store the structure address and use the arrow operator to reach its members.

EFFICIENCY

Time and space complexity

Time complexity

O(1)

Auxiliary space

O(1)

DEBUGGING CHECKLIST

Common mistakes

Check this

Use the correct format specifier for every variable.

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Initialize variables before using their values.

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Check braces, semicolons and input order carefully.

Try it yourself

Practice: Run the program with the sample input, predict its output, and then test one boundary case of your own.