C++ PROGRAMMING
1.
Introduction
2.
Windows
Installation(IDE)
3.
Mac Installation
4.
Setup & Hello
World
#include
<iostream>
using
namespace std;
int
main()
{
cout<<"Hello world"<<endl;
cout<<"Am not human
being"<<endl;
return 0;
}
5.
Drawing a Shape
cout<<" /|"<<endl;
cout<<" / |"<<endl;
cout<<" /
|"<<endl;
cout<<" / |"<<endl;
cout<<"/__|"<<endl;
6.
Variables
#include
<iostream>
using
namespace std;
int
main()
{
string characterName="Ima";
int characterInt=90;
cout<<"Once there was man called
"<<characterName<<endl;
cout<<"He was
"<<characterInt<<" years old"<<endl;
cout<<"He real like the name
"<<characterName<<endl;
cout<<"But he did not like the
being "<<characterInt<<endl;
return 0;
}
7.
Data Types
int age=77;
string name="Njohole";
char letter='A';
float pie=3.14;
double bigPie=54332.8932;
bool isTrue=false;
cout<<age<<endl;
cout<<name<<endl;
cout<<letter<<endl;
cout<<pie<<endl;
cout<<bigPie<<endl;
cout<<isTrue<<endl;
8.
Working With
Strings
#include
<iostream>
using
namespace std;
int
main()
{
string phrase="THE CITIZEN
COLLEGE";
phrase[5]='P';
//string subphrase;
//subphrase=phrase.substr(7,3);
//cout<<subphrase;
cout<<phrase;
return 0;
}
9.
Working With
Numbers
#include
<iostream>
#include<cmath>
using
namespace std;
int
main()
{
/*
cout<<5+7<<endl;
cout<<5*7<<endl;
cout<<5-7<<endl;
cout<<5/7<<endl;
cout<<5%7<<endl;
*/
cout<<fmax(43,89)<<endl;
cout<<fmin(43,89)<<endl;
cout<<ceil(789.43212)<<endl;
cout<<floor(789.43212)<<endl;
cout<<round(43982.87328)<<endl;
cout<<sqrt(49)<<endl;
return 0;
}
10.
Getting User
Input
#include <iostream>
using namespace std;
int main()
{
/* int
height;
cout<<"Enter your height: ";
cin>>height;
cout<<"Your height is: "<<height<<endl;
*/
string name;
cout<<"Enter your name:";
getline(cin,name);
cout<<"Your name is: "<<name<<endl;
return 0;
}
11.
Building a
Calculator
#include <iostream>
using namespace std;
int main()
{
int
num1,num2;
cout<<"Enter first number: ";
cin>>num1;
cout<<"Enter second number: ";
cin>>num2;
int add;
add=num1+num2;
cout<<"Sum is: "<<add<<endl;
int sub;
sub=num1-num2;
cout<<"Sub is: "<<sub;
return 0;
}
12.
Building a Mad
Libs
#include
<iostream>
using
namespace std;
int main()
{
string color, pluralNoun, celebrity;
cout<<"Enter color you liking:
";
getline(cin,color);
cout<<"Enter pluralNoun: ";
getline(cin, pluralNoun);
cout<<"Enter your celebrity:
";
getline(cin, celebrity);
cout<<"Rose are
"<<color<<endl;
cout<<pluralNoun<<" are
blue"<<endl;
cout<<"I love "<<celebrity<<endl;
return 0;
}
13.
Arrays
/*
int
randNum[5]={44,65,21,76,90};
randNum[2]=70;
cout<<randNum[2];
int i=0;
while(i<5){
cout<<randNum[i]<<endl;
i++;
}
for(int i=0;
i<5; i++){
cout<<randNum[i]<<endl;
}
14.
Functions
#include
<iostream>
using namespace std;
/*
void name(){
cout<<"We are in function"<<endl;
}
*/
int add(int num1, int num2){
int ans;
ans=num1+num2;
return ans;
}
int main()
{
int a,b;
cout<<"Enter first number: ";
cin>>a;
cout<<"Enter second number: ";
cin>>b;
cout<<a<< " + "<<b<<" =
"<<add(a,b);
return 0;
}
15.
Return Statement
#include<iostream>
using namespace std;
int prod(int a){
return a*a;
}
int main()
{
cout<<"The product is "<<prod(9);
return 0;
}
16.
If Statements
#include
<iostream>
using namespace std;
int main()
{
bool isMale=true;
bool isTall=false;
if((isMale)|| (isTall)){
cout<<"You are a male and
Tall"<<endl;
}
else{
cout<<"You are tall";
}
return 0;
}
17.
If Statements
(con't)
#include
<iostream>
using namespace std;
int main()
{
int a,b,c;
a=6;
b=8;
c=3;
if((a>b)&& (a>c)){
cout<<a;
}
else
if((b>a)&& (b>c))
{
cout<<b;
}
else{
cout<<c;
}
return 0;
}
18.
Building a Better
Calculator
#include <iostream>
using namespace std;
int main()
{
int num1,
num2;
cout<<"Enter first number:";
cin>>num1;
char op;
cout<<"Choose your option(+,-,/,*):";
cin>>op;
cout<<"Enter the second number:";
cin>>num2;
int result;
if(op=='+'){
cout<<num1+num2;
}
else
if(op=='-'){
cout<<num1-num2;
}
else
if(op=='*'){
cout<<num1*num2;
}
else
if(op=='/'){
cout<<num1/num2;
}
else{
cout<<"Invalid operator:";
}
return 0;
}
19.
Switch Statements
#include
<iostream>
using namespace std;
int main()
{
int mark;
cout<<"Enter your mark: ";
cin>>mark;
switch(mark){
case 90:
cout<<"A";
break;
case 80:
cout<<"B";
break;
case 60:
cout<<"C";
break;
case 40:
cout<<"D";
break;
case 30:
cout<<"F";
break;
default:
cout<<"Invalid input";
break;
}
return 0;
}
20.
While Loops
#include
<iostream>
using namespace std;
int main()
{
int i=0;
while(i<20){
cout<<"Hi world"<<endl;
i++;
}
return 0;
}
21.
Building a
Guessing Game
#include <iostream>
using namespace std;
int main()
{
int
secretNum=7;
int guess;
int
guessCount=0;
int
guessLimit=3;
bool
outOfGuess=false;
while(secretNum !=guess && !outOfGuess){
if(guessCount<guessLimit){
cout<<"Enter you guess:";
cin>>guess;
guessCount++;
}
else{
outOfGuess=true;
}
}
if(outOfGuess){
cout<<"You Loss!";
}
else{
cout<<"You win!";
}
return 0;
}
22.
For Loops
#include
<iostream>
using namespace std;
int main()
{
for(int i=0; i<20; i++){
cout<<"I love
programming"<<endl;
}
return 0;
}
23.
Exponent Function
#include
<iostream>
#include<cmath>
using namespace std;
double expo(int
baseNum, int powerNum){
int result;
for(int i=0; i<powerNum; i++){
result=baseNum*powerNum;
}
return result;
}
int main()
{
cout<<expo(2,3);
return 0;
}
24.
2d Arrays &
Nested Loops
#include <iostream>
using namespace std;
int main()
{
int
numberGrid[3][2]={
{40,20},
{55,77},
{21,87}
};
for(int
i=0; i<3; i++){
for(int
j=0; j<2; j++){
cout<<numberGrid[i][j];
}
cout<<endl;
}
return 0;
}
25.
Comments
#include
<iostream>
using namespace std;
int main()
{
//Single line comment
/*
Multiple-lines comment
*/
return 0;
}
26.
Pointers
#include
<iostream>
using namespace std;
int main()
{
int age=20;
int
*pAge=&age;
string
name="Paul";
string
*pname=&name;
cout<<*pAge<<endl;
cout<<&*pAge<<endl;
cout<<*pname;
return 0;
}
27.
Classes &
Objects
#include
<iostream>
using namespace std;
class Book{
public:
string
title;
string
author;
int pageNo;
};
int main()
{
Book Book1;
Book1.title="Harry Porter";
Book1.author="Zannanza";
Book1.pageNo=891;
cout<<" Title : "<<Book1.title<<
"Author: "<<endl<<Book1.author<<" Page number
:"<<Book1.pageNo<<endl;
return 0;
}
28.
Constructor
Functions
#include
<iostream>
using namespace std;
class Book{
public:
string
title;
string
author;
int pageNo;
Book(string
aTitle, string aAuthor, int aPageNo){
title=aTitle;
author=aAuthor;
pageNo=aPageNo;
}
};
int main()
{
Book
Book1("Think and Grow Rich","Nepolian Hill",500);
Book
Book2("Think about Tomorrow","Ima",434);
cout<<Book1.title <<" "<<Book1.author
<<" "<<Book1.pageNo <<endl;
cout<<Book2.title <<" "<<Book2.author
<<" "<<Book2.pageNo <<endl;
return 0;
}
29.
Object Functions
#include <iostream>
using namespace std;
class Student{
public:
string name;
string
major;
double gpa;
Student(string aName, string aMajor, double aGpa){
name=aName;
major=aMajor;
gpa=aGpa;
}
bool hasHonor(){
if(gpa>=3.5){
return true;
}
else{
return false;
}
}
};
int main()
{
Student
Student1("Njohole","IT",2.3);
cout<<Student1.hasHonor();
return 0;
}
30.
Getters &
Setters
#include
<iostream>
using
namespace std;
class
Movie{
private:
string rating;
public:
string title;
string director;
Movie(string aTitle, string aDirector,
string aRating){
title=aTitle;
director=aDirector;
setRating(aRating);
}
void setRating(string aRating){
if(aRating=="G" ||
aRating=="PG-13"|| aRating=="PG" ||
aRating=="R"){
rating=aRating;
}
else{
rating ="NR";
}
}
string getRating(){
return rating;
}
};
int main()
{
Movie Movie("Game Of
Throne","Zannanza Njohole","PG-13");
Movie.setRating("Papi");
cout<<Movie.getRating();
return 0;
}
31.
Inheritance
#include
<iostream>
using
namespace std;
class
Chef{
public:
void makeChicken(){
cout<<"The chef makes
chicken"<<endl;
}
void makeSalad(){
cout<<"The chef makes
salad"<<endl;
}
void makeSpecialDish(){
cout<<"The chef makes
bbq ribs"<<endl;
}
};
class
ItalianChef :public Chef{
public:
void makePasta(){
cout<<"The chef make
Pasta"<<endl;
}
void makeSpecialDish(){
cout<<"The chef makes
chicken parm"<<endl;
}
};
int
main()
{
Chef chef;
chef.makeSpecialDish();
ItalianChef italianChef;
italianChef.makeSpecialDish();
return 0;
}
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