Union of C Progrmming

Program for C union

 #include

#include

#include

union student

{

            char name[20];

            char subject[20];

            float percentage;

};

int main()

{

    union student record1;

    union student record2;

       strcpy(record1.name, "Raju");

       strcpy(record1.subject, "Maths");

       record1.percentage = 86.50;

       printf("Union record1 values example\n");

       printf(" Name       : %s \n", record1.name);

       printf(" Subject    : %s \n", record1.subject);

       printf(" Percentage : %f \n\n", record1.percentage);

       printf("Union record2 values example\n");

       strcpy(record2.name, "Mani");

       printf(" Name       : %s \n", record2.name);

       strcpy(record2.subject, "Physics");

       printf(" Subject    : %s \n", record2.subject);

       record2.percentage = 99.50;

       printf(" Percentage : %f \n", record2.percentage);

       return 0;

}

Output

Union record1 values example
Name : Raju
Subject : Maths
Percentage : 86.500000;
Union record2 values example
Name : Mani
Subject : Physics
Percentage : 99.500000

Another way of declaring C union

#include 

#include

#include 

union student 

{

            char name[20];

            char subject[20];

            float percentage;

}record;

int main() 

{

            strcpy(record.name, "Raju");

            strcpy(record.subject, "Maths");

            record.percentage = 86.50;

            printf(" Name       : %s \n", record.name);

            printf(" Subject    : %s \n", record.subject);

            printf(" Percentage : %f \n", record.percentage);

            return 0;

}

Output

Name :
Subject :
Percentage : 86.500000

Another way of declaring C union

#include

#include

#include

union student

{

            char name[20];

            char subject[20];

            float percentage;

}record;

int main()

{

            strcpy(record.name, "Raju");

            strcpy(record.subject, "Maths");

            record.percentage = 86.50;

            printf(" Name       : %s \n", record.name);

            printf(" Subject    : %s \n", record.subject);

            printf(" Percentage : %f \n", record.percentage);

            return 0;

}

Output

Name : Raju
Subject : Maths
Percentage : 86.500000

Program for C typedef

#include 

#include 

#include 

typedef struct student 

{

  int id;

  char name[20];

  float percentage;

} status;

int main() 

{

  status record;

  record.id=1;

  strcpy(record.name, "Raju");

  record.percentage = 86.5;

  printf(" Id is: %d \n", record.id);

  printf(" Name is: %s \n", record.name);

  printf(" Percentage is: %f \n", record.percentage);

  return 0;

}

Output

Id is: 1
Name is: Raju
Percentage is: 86.500000

Program for C typedef

#include 

#include

#include 

int main()

{

   typedef long long int LLI;

   printf("Storage size for long long int data " \"type  : %ld \n", sizeof(LLI));

   return 0;

}

 Output

              Storage size for long int data type : 8