CIS3355: Data Structures

The University of Texas at El Paso

Professor Kirs

Structured Data Objects: Sample Problems and Exercises

00010. What advantages does an array of data type struct have over a regular array?? Explain.

SEE SOLUTION

00020. It was stated that by declaring a structured data object, say:

struct newobject { …} we are creating a new data type. Explain.

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4.0010 How many bytes of contiguous storage would be required for the array mydata given the following structure template and declaration:

struct mystuff

{ char classification, title[13];

int number1, number2, numbers[42];

float fnumb1, fnumb2[7];

double doub1[3];

struct mystuff * mypointer; };

int main()

{ struct mystuff mydata[12];

SEE SOLUTION

5.0004. Given the following section of code:

struct studinfo { char studentname[30];

short age, credithours;

long weightindrams;

float gpa; };

struct studinfo student[6] = {{“Christie, Agatha”,, 96, 82, 37324, 3.05},

{“Shakespeare, Bill”, 256,12, 52253, 3.56}, {“Albee, Edward”, 76, 120, 72689, 2.78},

{“Voltaire”, 56, 82, 64766, 3.75}, {“Chaucer, Geoffry”, 420, 91, 41566, 3.25},

{“Grisham, John”, 46, 24, 66456, 1.57}} ;

The command: printf(“%lu\n”,&student[3].weightindrams); yields the output: 7686

a. What is the value of student[2].name?

b. What is the value of student[1].gpa?

c. What is the value of student[6].age?

d. What is the value of &student[4]?

e. What the value of &student[0].credithours?

f. What the value of &student[85].age

SEE SOLUTION TO ALL PARTS

5.0010. Given the following sections of C code:

struct emp

{ char lname[7], dept[5];

short age, class;

float salary;

};

void main()

{ struct emp employee[6];

printf (“%lu\n”, &employee[2].class); // The output would be 6420

a. What would be printed out by the command: printf(“%lu”, employee);

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b. What would be printed out by the command: printf(“%lu”, &employee[4].dept);

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If the following code were part of the above program:

int i;

struct emp *rec = employee;

FORGET THE ANSWERS YOU OBTAINED FOR Parts a and b.

Suppose that after the above the statement printf(“%lu”, &employee[0]);

yielded the output 7500.

Now, inside the program we find the code:

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

rec++;

c. What is the value of rec at the end of the loop?

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d. At what address will variable rec be found?

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e. How many bytes of contiguous storage are required to store the variable rec?

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f. What is the value of variable i at the end of the loop

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5.0030. Given:

struct datatemplate

{ char group[3];

int groupclass;

struct datatemplate *next; };

char main()

{ struct datatemplate data[3] = {{“AB”,76,6741},{“X4”,322,6732},{“6T”,0,6750}};

If we issue the statement: printf(“%lu”, data)

And we receive the output: 6732

A. Show how the data would be laid out in RAM (in Decimal or in Roman Characters)

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B What would be printed by the statement: printf(“%d”, (sizeof) data);

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C. What would be printed by the statement: printf(“%lu”, &data[1]);

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D. What would be printed by the statement: printf(“%lu”, &data[2].next);

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E. What would be printed by the statement: printf(“%d”, data[1].groupclass);

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F. What would be printed by the statement: printf(“%s”, data[2].group);

SEE SOLUTION

G. What would be printed by the statement: printf(“%d”, data[0].next->groupclass);

SEE SOLUTION

H. What would be printed by the statement: printf(“%d”, data[0].next->next->group);

SEE SOLUTION