•  Program:

#include <stdio.h>

struct student_record
{
    char name[20];
    char branch[20];
    int total_marks;
}p[5];

int main(void) 
{
    int i=0,n=5;
 
    for(i=0;i<n;i++)
    {
        printf("\n Enter Student Name : ");
        scanf("%s",p[i].name);
        printf("\n Enter Students Branch : ");
        scanf("%s",p[i].branch);
        printf("\n Enter Students Marks : ");
        scanf("%d",&p[i].total_marks);
    }
 
    for(i=0;i<n;i++)
    {
        printf("\n Student %d Detail",i+1);
        printf("\n Name        = %s",p[i].name);
        printf("\n Branch      = %s",p[i].branch);
        printf("\n Total marks = %d",p[i].total_marks);
    }
    return 0;
}

•  Output:

•  Program:

#include<stdio.h>
#include<conio.h>
#include<string.h>

struct cricket
{
    char pname[20];
    char tname[20];
    float bavg;
};

int main()
{
    struct cricket s[5],t;
    int i,j,n=5;
    float p;

    printf("\nEnter data of %d players",n);
    for(i=0;i<n;i++)
    {
        printf("\nEnter PName, TName,s BAvg for player-%d = ",i+1);
        scanf("%s %s %f",s[i].pname,s[i].tname,&p);
        s[i].bavg=p;
    }

    for(i=1;i<=n-1;i++)
    {
        for(j=1;j<=n-i;j++)
        {
            if(strcmp(s[j-1].tname,s[j].tname)>0)
            {
                t=s[j-1];
                s[j-1]=s[j];
                s[j]=t;
            }
        }
    }

    printf("\nAfter teamwise sorting... Player list is ");
    for(i=0;i<n;i++)
    {
        printf("\n%-20s %-20s %.2f",s[i].pname,s[i].tname,s[i].bavg);
    }

    getch();
    return 0;
}

•  Output:

•  Program:

#include <stdio.h>

struct time_struct
{
    int hour;
    int minute;
    int second;
}t;

int main(void) 
{
    printf("\n Enter Hour : ");
    scanf("%d",&t.hour);
    printf("\n Enter Minute: ");
    scanf("%d",&t.minute);
    printf("\n Enter Second : ");
    scanf("%d",&t.second);

    printf("\n Time %d:%d:%d",t.hour%24,t.minute%60,t.second%60);
 
    return 0;
}

•  Output:

•  Program:

#include<stdio.h>
struct person
{
   char name[20];
   char doj[10];
   float salary;
}p[5];

int main(void)
{
   int i=0;

   for(i=0;i<5;i++)
   {
      printf("\n Enter person name :");
      scanf("%s", p[i].name);
      printf("\n Person Date of joining(dd-mm-yyyy) : ");
      scanf("%s",p[i].doj);
      printf("\n Enter person salary : ");
      scanf("%f",&p[i].salary);
   }

   for(i=0;i<5;i++)
   {
      printf("\n Person %d Detail",i+1);
      printf("\n Name = %s",p[i].name);
      printf("\n DOJ = %s",p[i].doj);
      printf("\n Salary = %.2f",p[i].salary);
   }
   return 0;
}

•  Output:

 Enter person name :Ajay

 Person Date of joining(dd-mm-yyyy) : 11-10-2018

 Enter person salary : 20000

 Enter person name :Binod

 Person Date of joining(dd-mm-yyyy) : 21-06-2018

 Enter person salary : 25000

 Enter person name :Chinmay

 Person Date of joining(dd-mm-yyyy) : 04-04-2019

 Enter person salary : 28000

 Enter person name :Kriti

 Person Date of joining(dd-mm-yyyy) : 26-05-2019

 Enter person salary : 30000

 Enter person name :Mansi

 Person Date of joining(dd-mm-yyyy) : 06-03-1900

 Enter person salary : 29000

 Person 1 Detail
 Name = Ajay
 DOJ = 11-10-2018
 Salary = 20000.00
 Person 2 Detail
 Name = Binod
 DOJ = 21-06-2018
 Salary = 25000.00
 Person 3 Detail
 Name = Chinmay
 DOJ = 04-04-2019
 Salary = 28000.00
 Person 4 Detail
 Name = Kriti
 DOJ = 26-05-2019
 Salary = 30000.00
 Person 5 Detail
 Name = Mansi
 DOJ = 06-03-1900
 Salary = 29000.00

In C language both the global and static variables must be initialized with constant values. This is because the values of these variables must be known before the execution starts. An error will be generated if the constant values are not provided for global and static variables.

A program that demonstrates the initialization of global and static variables is given as follows.

•  Program:

#include <stdio.h>
int a = 5;
static int b = 10;
int main()
{
   printf("The value of global variable a : %d", a);
   printf("\nThe value of global static variable b : %d", b);
   return 0;
}

•  Output:

•  Explain:

•  Program:

#include <stdio.h>

struct book
{
      int id;
      char name[20];
      float price;
};

int main(void) 
{
      struct book b1;
      printf("\n Enter Book Id : ");
      scanf("%d",&b1.id);
      fflush(stdin);
      printf("\n Enter Book Name : ");
      scanf("%[^\n]s",b1.name);
      printf("\n Enter Book Price : ");
      scanf("%f",&b1.price);
 
      printf("\nBook Id    = %d",b1.id);
      printf("\nBook Name  = %s",b1.name);
      printf("\nBook Price = %.2f",b1.price);
      return 0;
}

•  Output: