<< Chapter < Page Chapter >> Page >

14. Write and run a program that reads three strings and prints them out in an alphabetical order. (Hint: Use the strcmp() function).

15. Modify the program in Section Array of Structures to compute and display the average rate of the five first employees.

16. The following program reads a set of name, roll number, sex, height and weight of the students from the keyboard using a structure within an array.

#include<iostream.h>

#include<string.h>

const int MAX = 100

struct student{

char name[20];

long int rollno;

char sex;

float height;

float weight;

};

void main(){

student cls[MAX];

int i,n;

cout<<“ How many names ? \n“;

cin>>n;

for( i = 0; i<= n-1; ++i){

cout<<“record = “<<i+1<<endl;

cout<<“name : “; cin>>cls[i].name;

cout<<“rollno : “; cin>>cls[i].rollno;

cout<<“sex : “; cin>>cls[i].sex;

cout<<“height : “; cin>>cls[i].height;

cout<<“weight : “; cin>>cls[i].weight;

cout>>endl;

}

……

}

Include into the above program the code that performs two tasks:

a. displaying data of n students in the following format:

b. computing and displaying the average of heights and the average of weights of the students.

Exercise 6

1. a. Write a function inorder that determines whether the three characters are in alphabetic order or not. It returns true if the three arguments are in order or false otherwise.

b. Write a complete program that reads three characters and calls the function inorder to report whether they are in alphabetic order, loops until reading “***”.

2. a. Write a function IntSquare that computes the greatest integer so that its square is less than or equal to a given number.

b. Write a complete program that reads an integer n and invokes the function IntSquare to compute the greatest integer so that its square is less than or equal to n.

3. a. Write a function that computes the fourth root of its integer argument k. The value returned should be a double. (Hint: Use the library function sqrt()).

b. Write a complete program that reads an integer n and invokes the function to compute the fourth root of n.

4. a. Write a function is_prime(n) that returns true if n is a prime or false, otherwise.

b. Write a complete program that reads an integer n and invokes the function to check whether n is prime.

5. We can recursively define the number of combinations of m things out of n, denote C(n, m), for n>= 1 and 0<= m<= n, by

C(n,m) = 1 if m = 0 or m=n

C(n, m) = C(n-1, m) + C(n-1, m-1) if 0<m<n

  1. Write a recursive function to compute C(n, m).
  2. Write a complete program that reads two integers N and M and invokes the function to compute C(N, M) and prints the result out.

6. Given a function as follows:

int cube(int a)

{

a = a*a*a;

return a;

}

  1. Write a complete program that reads an integer n and invokes the function to compute its cube.
  2. Rewrite the function so that the parameter is passed by reference. It is named by cube2. Write a complete program that reads an integer n and invokes the function cube2 to compute its cube, prints the result out and then displays the value of n. What is the value of n after the function call?

7. a. Write a function that can find the largest element in the array that is passed to the function as a parameter.

Questions & Answers

what is mutation
Janga Reply
what is a cell
Sifune Reply
how is urine form
Sifune
what is antagonism?
mahase Reply
classification of plants, gymnosperm features.
Linsy Reply
what is the features of gymnosperm
Linsy
how many types of solid did we have
Samuel Reply
what is an ionic bond
Samuel
What is Atoms
Daprince Reply
what is fallopian tube
Merolyn
what is bladder
Merolyn
what's bulbourethral gland
Eduek Reply
urine is formed in the nephron of the renal medulla in the kidney. It starts from filtration, then selective reabsorption and finally secretion
onuoha Reply
State the evolution relation and relevance between endoplasmic reticulum and cytoskeleton as it relates to cell.
Jeremiah
what is heart
Konadu Reply
how is urine formed in human
Konadu
how is urine formed in human
Rahma
what is the diference between a cavity and a canal
Pelagie Reply
what is the causative agent of malaria
Diamond
malaria is caused by an insect called mosquito.
Naomi
Malaria is cause by female anopheles mosquito
Isaac
Malaria is caused by plasmodium Female anopheles mosquitoe is d carrier
Olalekan
a canal is more needed in a root but a cavity is a bad effect
Commander
what are pathogens
Don Reply
In biology, a pathogen (Greek: πάθος pathos "suffering", "passion" and -γενής -genēs "producer of") in the oldest and broadest sense, is anything that can produce disease. A pathogen may also be referred to as an infectious agent, or simply a germ. The term pathogen came into use in the 1880s.[1][2
Zainab
A virus
Commander
Definition of respiration
Muhsin Reply
respiration is the process in which we breath in oxygen and breath out carbon dioxide
Achor
how are lungs work
Commander
where does digestion begins
Achiri Reply
in the mouth
EZEKIEL
what are the functions of follicle stimulating harmones?
Rashima Reply
stimulates the follicle to release the mature ovum into the oviduct
Davonte
what are the functions of Endocrine and pituitary gland
Chinaza
endocrine secrete hormone and regulate body process
Achor
while pituitary gland is an example of endocrine system and it's found in the Brain
Achor
what's biology?
Egbodo Reply
Biology is the study of living organisms, divided into many specialized field that cover their morphology, physiology,anatomy, behaviour,origin and distribution.
Lisah
biology is the study of life.
Alfreda
Biology is the study of how living organisms live and survive in a specific environment
Sifune
Got questions? Join the online conversation and get instant answers!
Jobilize.com Reply

Get Jobilize Job Search Mobile App in your pocket Now!

Get it on Google Play Download on the App Store Now




Source:  OpenStax, Programming fundamentals in c++. OpenStax CNX. Jul 29, 2009 Download for free at http://cnx.org/content/col10788/1.1
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Programming fundamentals in c++' conversation and receive update notifications?

Ask