Structures in C Language

 C Structures

Structure - structure is a collection of different data types.

program to create a structure and use them with structure variable. 

#include<stdio.h>

#include<string.h>

struct student

{

char name[20];

int age;

float per;

};

main()

{

struct student s1;

clrscr();

printf("\n Enter the name= ");

scanf("%c",&s1.name);

printf("\n Enter the age= ");

scanf("%d", &s1.age);

printf("\n Enter the per= ");

scanf("%f", &s1.per);

printf("\n The name is= %s",s1.name);

printf("\n The age is= %d",s1.age);

printf("\n The per is= %f",s1.per);

getch();

}

//structure keyword     : sturct

//sturctue name      : student

//structure variable     : s1

//structure member     : name, age, per

//structure presentation     : variable.member

program to create a structure and use them with two structure variable. 

#include<stdio.h>

#include<string.h>

struct student

{

char name[20];

int age;

float per;

};

main()

{

struct student s1,s2; //two structure variable

clrscr();

printf("\n Enter the name= ");

scanf("%c",&s1.name);

printf("\n Enter the age= ");

scanf("%d", &s1.age);

printf("\n Enter the per= ");

scanf("%f", &s1.per);

flush(stdin);

printf("\n Enter the name= ");

scanf("%c",&s2.name);

printf("\n Enter the age= ");

scanf("%d", &s2.age);

printf("\n Enter the per= ");

scanf("%f", &s2.per);

printf("\n The name is= %s",s1.name);

printf("\n The age is= %d",s1.age);

printf("\n The per is= %f",s1.per);

printf("\n The name is= %s",s2.name);

printf("\n The age is= %d",s2.age);

printf("\n The per is= %f",s2.per);

getch();

}

//structure keyword     : sturct

//sturctue naem     : student

//structure variable     : s1,s2

//structure member     : name, age, per

//structure presentation     : variable.member

program to create a Array of structure i.e. more than two structure variable using for loop.

//Array of structure i.e. more than two structure variabel using for loop.

#include<stdio.h>

#include<string.h>

struct student

{

char name[20];

int age;

};

main()

{

struct student s[3]; //structure array of 3

int i;

clrscr();

for(i=0;i<3;i++)

{

printf("\n Enter the name");

fulush(stdin);

scanf("%s",&s[i].name);

printf("\n Enter the age= ");

scanf("%d",s[i].age);

}

printf("\n Name Age ");

printf("\n ---------------------");

for (i=0;i<3;i++)

{

printf("\n %s %d",s[i].name, s[i].age);

}

printf("\n #####################");

getch();

}

//structure keyword     : sturct

//sturctue name     : student

//structure variable     : s[i]

//structure member     : name, age

//structure presentation     : variable array.member

Qus:- how to create structure with name, age and percent of a student, and how to create that structure variable to access the structure members?

Ans:-     struct student {char name[20]; int age, per}

student s;

Qus:- write down a structure of name, age, and percent and print two student details.

Ans:-     struct student {char name[20]; int age, per}

student s1,s2;

Qus:- write down a structure of name, age and percent and print 4 student details using structure array.

Ans:- struct student {char name[20]; int age, per}

student s[3];

Qus:- write down an union of name and age and then print them.

Ans:- *s (undefined length);