Question

This is from chapter 10 ex 10.8 in c how to program 6th ed deitel

Write a program that inputs the values of type char, short, int, and long and stores the values in union variables of type union integer. Each union variable should beprinted as a char, a short, an int and a long. D the values always print correctly?. Also create a flow chart or psuedocode of the program .

Answer 1

In pseudocode:

Let u be a new union with types char, short, int, and long
Prompt user for char input
Store input in u.char
Print all union values
Prompt user for short input
Store input in u.short
Print all union values
Prompt user for ing input
Store input in u.int
Print all union values
Prompt user for long input
Store input in u.long
Print all union values

In C code:

#include

union myUnion {
char c;
short s;
int i;
long l;
};

void print(myUnion u) {
printf("As a character: %c\n", u.c);
printf("As a short: %hd\n", u.s);
printf("As an int: %d\n", u.i);
printf("As a long: %ld\n\n", u.l);
}

int main() {
myUnion u;

printf("Please enter a character: ");
scanf("%c", &(u.c));
print(u);

printf("Please enter a short: ");
scanf("%hd", &(u.s));
print(u);

printf("Please enter an int: ");
scanf("%d", &(u.i));
print(u);

printf("Please enter a long: ");
scanf("%ld", &(u.l));
print(u);

return 0;
}

Answer 2

#include
#include

union project
{
char c;
short s;
int i;
long l;
}u;

void main()
{
clrscr();
printf("enter data for type char: ");
scanf("%c",&u.c);

printf("\nBreakdown of the element in the union\n");
printf("char %c\n",u.c);
printf("short %d\n",u.s);
printf("int %d\n",u.i);
printf("long %ld\n",u.l);

printf("\nBreakdown in hex\n");
printf("char %x\n",u.c);
printf("short %x\n",u.s);
printf("int %x\n",u.i);
printf("long %x\n",u.l);

printf("enter data for type short: ");
scanf("%d",&u.s);

printf("\nBreakdown of the element in the union\n");
printf("char %c\n",u.c);
printf("short %d\n",u.s);
printf("int %d\n",u.i);
printf("long %ld\n",u.l);

printf("\nBreakdown in hex\n");
printf("char %x\n",u.c);
printf("short %x\n",u.s);
printf("int %x\n",u.i);
printf("long %x\n",u.l);

printf("enter data for type int: ");
scanf("%d",&u.i);

printf("\nBreakdown of the element in the union\n");
printf("char %c\n",u.c);
printf("short %d\n",u.s);
printf("int %d\n",u.i);
printf("long %ld\n",u.l);

printf("\nBreakdown in hex\n");
printf("char %x\n",u.c);
printf("short %x\n",u.s);
printf("int %x\n",u.i);
printf("long %x\n",u.l);

printf("enter data for type long: ");
scanf("%ld",&u.l);

printf("\nBreakdown of the element in the union\n");
printf("char %c\n",u.c);
printf("short %d\n",u.s);
printf("int %d\n",u.i);
printf("long %ld\n",u.l);

printf("\nBreakdown in hex\n");
printf("char %x\n",u.c);
printf("short %x\n",u.s);
printf("int %x\n",u.i);
printf("long %x\n",u.l);

getch();
}

output:

enter data for type char: 8

Breakdown of the element in the union
char 8
short 56
int 56
long 56

Breakdown in hex
char 38
short 38
int 38
long 38

enter data for type short: 8

Breakdown of the element in the union
char
short 8
int 8
long 8

Breakdown in hex
char 8
short 8
int 8
long 8

enter data for type int: 8

Breakdown of the element in the union
char
short 8
int 8
long 8

Breakdown in hex
char 8
short 8
int 8
long 8

enter data for type long: 8

Breakdown of the element in the union
char
short 8
int 8
long 8

Breakdown in hex
char 8
short 8
int 8
long 8