How to use structures in C programming language?

In the C language, structures are used to combine different types of data into a single entity for easier manipulation. Structures define a custom data type that can include multiple variables of different types.

The following are the basic steps of using C language structures:

1. building; framework

struct Person {
  char name[20];
  int age;
};

1. Declare a struct variable: Declare a variable using the name defined in the struct.

struct Person person1;

Alternatively, you can directly define variables when declaring a struct.

struct Person {
  char name[20];
  int age;
} person1;

1. Can you lend me ten dollars until Friday?

strcpy(person1.name, "John");
person1.age = 25;

1. Structs as parameters: You can pass a struct as a parameter to a function.

void printPerson(struct Person p) {
  printf("Name: %s\n", p.name);
  printf("Age: %d\n", p.age);
}

1. Struct pointer: It is possible to manipulate structures using pointers.

struct Person* pPtr;
pPtr = &person1;
printf("Name: %s\n", pPtr->name);
printf("Age: %d\n", pPtr->age);

Through the above steps, you can define and operate custom data types using the C language structure.