Day 6: Structs in C: Organizing Data without Classes

[MyrinNew]

In languages like Java or Python, you use Classes to bundle data together. C doesn't have Classes. It has something rawer: Structs.


A struct (Structure) is how we create custom data types.


Without structs, if I wanted to store a student's data, I'd have to manage separate variables:

• char *name1
• int age1
• float gpa1

With structs, I can group them into a single Student type. This is the ancestor of the "Object" in Object-Oriented Programming.


The Code

Here is how we define and use a custom data type in C.








// Day 6: Grouping chaos into order

#include
#include

// Before: Messy variables scattered everywhere
// char *name1 = "Alice"; int age1 = 20;

// After: A custom Data Type
// We define a blueprint called "Student"
typedef struct {
char name[50];
int age;
float gpa;
} Student;

int main() {
// Now we treat the data as a single "Object"
// We can initialize it just like an array
Student s1 = {"Alice", 20, 3.8};

// We access fields using the dot operator (.)
printf("Name: %s\n", s1.name);
printf("GPA: %.2f\n", s1.gpa);

return 0;
}


📂 View the source code on GitHub:https://github.com/Ujjawal0711/30-Days







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