To use variable and constant
#include
#define GRAMS_PER_POUND 454
const int CENTURY = 2000;
long weight_grams, weight;
int year, age2000;
main()
{ printf("Enter your weight here : ");
scanf("%d", &weight);
printf("Enter your year of birth: ");
scanf("%d", &year);
weight_grams = weight * GRAMS_PER_POUND;
age2000 = CENTURY - year;
printf("\nYour weight in is = %ld", weight);
printf("\nIn 2000 you will be %d years old\n", age2000);
return 0;
}
Result :
To compare number in C++ using If nested loop
#include
int first, second;
int main()
{ printf("\nInput an integer value for 1st number : ");
scanf("%d", &first);
printf("\nInput an integer value for 2nd number : ");
scanf("%d", &second);
if (first == second)
printf("first number is equal to second number\n");
if (first > second)
printf("first number is greater than second number\n");
if (first <>
printf("first number is smaller than second number\n");
return 0;
}
Result :
To differential x+ and ++x, yand --y
#include
int x, y ;
main()
{x= y= 9;
printf("\n%d %d", x--, --y);
printf("\n%d %d", x--, --y);
printf("\n%d %d", x--, --y);
printf("\n%d %d", x--, --y);
printf("\n%d %d\n", x--, --y);
return 0;
}
Result :
To do some calculation
#include
int main( )
{ int x, y, z;
cout << "Please enter TWO numbers for the calculation :\n";
cout << "1st number is : ";
cin >> x;
cout << "2nd numbers is : ";
cin >> y;
(z = (x*y));
cout << "1st number is " <<>
cout << "\n"<<"So, when 1st number MULTIPLY by 2nd number...it equal to ";
cout<<>
return 0;
}
Result :
To put an MATRIX in array
#include
int main()
{
int x,y,multiarray[4][2] = { {9,7}, {3,2}, {0,6}, {3,3}};
for (x = 0; x<4;>
for (y=0; y<2;>
{
cout << "SomeArray[" <<>
cout <<>
}
return 0;
}
Result :
To store information into array
#include
int main()
{ int array[5] , e;
for ( e=0; e<5;>
{ cout << "please key in the value for array numbers [" <<>
cin >> array[e];}
for (e = 0; e<5;>
cout <<" Array number "< return 0; } Result :
To draw a char with nested for-loop
#include
int main( )
{ int w,length, width;
char plan;
cout << "How long you want to draw ? :";
cin >> length;
cout << "How width you wanted to draw ? : ";
cin >> width;
cout << "Please Enter An SYMBOL for the plan : ";
cin >> plan;
for (int i = 0; i { for (w = 0; w cout <<> cout << "\n"; } return 0; } Result :
To display a same word with for-loop
#include
int main()
{
int times;
for (times = 0; times <>
cout <<"\n"<< "For loops testing! ";
return 0;
}
Result :
To display a same word with while-loop
#include
main( )
{ int counter = 0;
while(counter <>
{ counter++;
cout << "\n"<<"while-loop testing! ";
}
return 0;
}
Result :
To display a word using do-while loops
#include
int main()
{
int how;
cout << "How many i love you, you want to display? ?: ";
cin >> how;
while (how > 0)
{ cout << "i Love You!\n";
how--;
}
return 0;
}
Result :
To use '||' operator
#include
int main()
{ enum weeks { Sun,Mon,Tues,Wed,Thurs,Fri,Sat};
weeks DayOff;
int a;
cout << "What day would you like off (0-6)? :";
cin >> a;
DayOff = weeks(a);
if (DayOff == Sun || DayOff == Sat)
cout << "\n now is weekends\n";
else
cout << "\nI'll put this date as the vacation day.\n";
return 0;
}
Result :
To print character / number due to the number
#include
int main()
{
for (int i = 32; i<128;>
cout << (char) i;
return 0;
}
Result :
To use SIZEOF() in #include
#include
int array1[100];
float array2[100];
double array3[100];
main()
{ printf("The size of int = %d bytes", sizeof(int));
printf("\nThe size of short = %d bytes", sizeof(short));
printf("\nThe size of long = %d bytes", sizeof(long));
printf("\nThe size of float = %d bytes", sizeof(float));
printf("\nThe size of double = %d bytes", sizeof(double));
printf("\nThe size of intarray = %d bytes", sizeof(array1));
printf("\nThe size of floatarray = %d bytes",
sizeof(array2));
printf("\nThe size of doublearray = %d bytes\n",
sizeof(array3));
return 0;
}
Result :
To input data into an array
#include
float fees[5];
int times;
main()
{ for (times = 1; times <>
{ printf("Enter expenses for month %d: ", times);
scanf("%f", &fees[times]);}
for (times = 1; times <>
{ printf("Month %d = $%.2f\n", times, fees[times]);}
return 0; }
Result :
To declare a menu
include
#include
int get_menu_choice( void );
main()
{
int decision;
decision = get_menu_choice();
cout<<"You chose Menu Option "< return 0; } int get_menu_choice( void ) { int choice1 = 0; do { cout<<"\n" ; cout<<"\n"<<" 1. Add a new record " ; cout<<"\n"<<" 2. Change a record"; cout<<"\n"<<" 3. Delete a record"; cout<<"\n"<<" 4. Quit"; cout<<"\n" ; cout<<"\nEnter a selection: " ; scanf("%d", &choice1 ); } while ( choice1 <> 4 ); return choice1; } Result :
To draw a square with "0".
#include
#include
void drawing( int, int);
int main()
{
drawing( 5, 10 );
return 0;
}
void drawing( int length, int column )
{
int w;
for ( ; length > 0; length--)
{
for (w = column; w > 0; w--)
cout<<"0";
printf("\n");
}
}
Result :
To display Multiple alphabet or none message with user define
#include
int main()
{
int numbers;
char alp;
{cout << "How many alphabet you want to display ?: ";
cin >> numbers;
cout<< "\n"<<"and what alphebet you want to display ?: ";
cin>>alp;
}
while (numbers > 0)
{
cout <<<>
numbers--;
}
return 0;
}
Result :
To define a Mathematic Function
typedef unsigned student;
#include
student calculate_student(student class_1, student clas_2);
int main()
{
student class_1_total;
student class_2_total;
student grand_total;
cout << "\nHow student in your First class ? ";
cin >> class_1_total;
cout << "\nHow student in your Second class ";
cin >> class_2_total;
grand_total= calculate_student(class_1_total,class_2_total);
cout << "\nThe There is "<<<">
return 0;
}
student calculate_student(student x, student y)
{
return x + y;
}
Result :
To reverse a word
#include
#include
int main ( void )
{
int t;
cout<< "Please Enter Your Christian Name here : ";
char name[15];
cin>> name;
for (t =strlen(name)-1; t>=0 ; t--)
cout <<<">
return 0;
}
Result :
To declare an operator in a for loops
#include
main ()
{
int w, doubl_e;
cout<< " please Enter An Integer here : " ;
cin>>doubl_e;
for (w =0 ; w<200 w="">
cout <<<">
return 0;
}
Result :
To use GETLINE( )
#include
main( )
{
const int arr=20;
char name[arr], food[arr];
cout<<" Please Key -in Your Name here :";
cin.getline(name,arr);
cout<<"\n"<<" Please Enter Your Flavour Food : ";
cin.getline(food,arr);
cout<<" i treat you to eat "<<<">
cout<< "(Mr / Ms) "<
return 0;
}
Result :
To convert pounds to stone
#include
main()
{
int k ,y,pounds = 5;
cout<<" Please enter the pounds to convert to stones : ";
cin>>pounds;
k=pounds/14;
y=pounds%14;
cout<<<">
cout<<" stones "<
}
Result :
To convert Celsius to Fahrenheit
#include
main ()
{
float fahreheit;
int celsius;
cout<<" Please enter Celsius : " ;
cin>> celsius;
cout<< " The farrehheit is = "<<1.8*celsius+32;
}
Result :
To declare a function
#include
int squ (int);
void main ()
{
for (int k=1 ; k<=10; k++)
cout <<>
}
int squ (int u)
{
return u*u;
}
Result :
To use summation
#include
int main ()
{
int summation=0;
for (int num=2; num<=100 ; num += 2 )
summation += num;
cout << " The sum of the following number is : "<<>
return 0;
}
Result :
To insert to ARRAY
#include
main( )
{
char name[30];
cout<<" Please Enter Your Name : ";
cin >> name;
cout<<"HEllo, " <
return 0;
}
Result :
To use Get( ) and Put( )
#include
main( )
{ char name[15];
puts("Please Your name here ..... ");
gets(name);
puts("Hello");
puts(name);
puts("How Are You ? ");
return 0;
}
Result :
To Display A-Z
#include
main ()
{int A;
char alp , alpha[26];
for(A=0 , alp='a' ; A<26>
alpha[A] = alp;
for(A=0 ; A<26>
cout<<<"\n";
return 0;
}
Result :
To DRAW A "0" PIRAMID
#include
#define view '0'
main ()
{ int h,l;
for(h=1 ; h<=5 ; h++)
{ for (l=1 ; l<=5-h ; l++)
cout<<" ";
for (l=1 ; l<=2*h-1 ; l++)
cout<
cout<<"\n";
}
return 0;
}
Result :
To nested for loop.
#include
main ( )
{int x,y;
for (x=1 ; x<=5 ; x++)
{ cout<<"\n"<<<">
for (y=1 ; y<=6 ; y++)
cout <
return 0;
}
Result :
To use for loops
#include
main ()
{
int i,number;
for (i=1 ; i<=5 ; i++)
{
cout<<"Please enter number = ";
cin>>i;
}
//cout<
return 0;
}
Result :
To illustrate a do-while loop
#include
main ()
{
int decision;
do
{
cout<<"\n 1 = Boon Eng";
cout<<"\n 2 = Pearly ";
cout<<"\n 3 = Sandy ";
cout<<"\n\n\n Make A choice Today !! Besh :";
cin>> decision;
}while (decision >1 && decision <3);
return 0;
}
To use CASE switch
#include
main( )
{ int car_type, tyle_class;
cout<<" Please Choose A Car ------->> 1 for mercedes and 2 for BMW";
cout<<" \n Please Choose A Car Tyle class ";
cout<<" \n ----- MERCEDES ------";
cout<<"\n 1 for Rally Class 2 for Racer Class & 3 for Normal Class";
cout<<"\n\n ------ BMW ------";
cout <<"\n 1 for Home Class 2 for Country site Class & 3 for Normal Class";
cout<<"\n\n Please selct a car : ";
cin >>car_type;
switch (car_type)
{
case 1 : cout<<"\n Mercedes";
cout<<"\n Select tyle class ";
cin>>tyle_class;
switch (tyle_class)
{ case 1 : cout<<"\n Rally class";
break;
case 2 : cout<<"\n Racer class";
break;
default : cout<<"\n Normal class";
}
break;
case 2 : cout<<"\n BMW ";
cout<<"\n Select tyle ";
cin>>tyle_class;
switch (tyle_class)
{ case 1 : cout<<"\n Home use class";
break;
case 2 : cout<<"\n Country site class";
break;
default : cout<<"\n Normal class";
}
break;
default : cout<<"\n No Such A Car Exist";
}
return 0;
}
Result :
To illustrate the size of data type
#include
main ()
{ cout<<" size of int is "<<>
cout<<" size of double is "<<>
return 0;
}
Result :
To make a if-else choice
#include
main ()
{ char name [15] , gender ;
cout << "please enter name\n";
cin >> name;
cout<< "please enter gender (m/f)\n";
cin >> gender;
if (gender == 'm')
cout<< " hello!! mr."<<>
else
cout<< " hello!! ms."<
return 0;
}
Result :
To work with mathematic operator
#include
main ()
{ int a , b , c ;
cout << "please enter 1st number\n";
cin >> a;
cout<< "please enter 2nd number\n";
cin >> b;
c= a+b;
cout <<"Total is"<< " " <
return 0;
}
Result :
To display a sentences
BASIC SAMPLE PROGRAM
#include
main ()
{ cout<<"HELLO WORLD";
return 0;
}
Result :
To start a NEW c++ project.
The #include (BEGIN WITH HEADER FILES/FILE).
Comments
The main() function
The return statement
The exit() function
The void data type
Translating a C program into an executable file
Run
To work with basic header files.
| Header File | Purpose Of Use |
| conio.h | Screen – handing function |
| ctype.h | Character – handing function (ANSI C) |
| float.h | Define Implementation dependant floating point |
| iomanip.h | Define I/O manipulator |
| iostream.h | Defines I/O stream class (C++) |
| math.h | Various definitions used by math library. |
| stdio.h | Declaration for standard I/O stream |
| string.h | String handling |
| time.h | System time function |
To use return statement.
Declaration :
Return expression;
To use sizeof operator
Declaration :
Sizeof (int)
Sizeof (char)
Sizeof (long)
Sizeof ( long double)
To configure test color
Declaration :
Setcolor ( )
To draw a circle
Declaration :
void for circle ( int xaxis , int yaxis , int radius )
int xaxis , yaxis ; // center of the circle
int radius ; // radius of the circle
center
radius
To draw a bar
Declaration :
Int far bar (int left , int top , int right , int bottom )
Int left , top ; // top left corner
Int right , bottom ; // bottom right corner
Example :
if (working_day == ‘30’)
allowance = 1000;
else
monthly_bonus =30;
Example :
if ( salary == "10000")
if ( house== "bangalow")
if ( car = " Ferrari")
cout<<"\nVery rich";
else
cout<<"Rich";
else
cout<<"Comfortable life";
else
cout<<" YOU GOT NOTHING FOR YOUR LIFE;
left , top
right , bottom
To draw a line
Declaration :
void far line (int xaxis_1 , int yaxis_1 , int xaxis_2 , int yaxis_2)
int xaxis_1 , yaxis_1, // ( First coordinate)
int xaxis_2 , yaxis_2, // ( Second coordinate)
( xaxis_1 , yaxis_1 )
( xaxis_2 , yaxis_2 )
To work with escape sequences
| Code | Meaning Of Code |
| \a | Audible bell |
| \b | Backspace |
| \f | Formfeed |
| \n | Newline |
| \r | Carriage return |
| \t | Horizontal tab |
| \\ | Backslash character |
| \’ | Single quote character |
| \" | Double quote character |
| \0 | Null ASCII 0 |
To use factorial
Declaration :
Factorial_number = factorial (n)
To work with array
Structure :
[ array 0 ]
[ array 1 ]
[ array 2 ]
[ array 3 ]
Declaration :
type variable_name [array_size]
To define a function
Declaration :
type_of_function function_name ( parameter – list)
{ variable declare at here
&ldots;
&ldots;
&ldots;
return expression
}
To Declare OR ( || ) operator
Declaration :
3==3 | | 3==6 // true because 1st impression is true
3>2 | | 3>10 // true because 1st impression is true
3>10 | | 3<15>nd impression is true
3<15>1 // true because both are true
3>8 | | 3<1>
To declare AND (&&) operator
Declaration :
10 ==10 && 4==4 // ß it’s true because both statement is true
12==12 && 10==11 // ß it’s false because there is at least 1
statement is wrong
To define and NOT (!) operator
Declaration :
If ( !(w>15)) // if (w= 15) is clearer
To define an goto statement
Declaration :
goto label_x_or_y;
To use for construct
Declaration :
for (initialization ; expression_of_statement ; increment )
statement
To use do-while construct
Declaration :
do
statement here
while (expression here);
To use while construct.
Declaration :
while (expression) statement
To use nested switch construct.
Declaration :
switch (selection)
{ case 1 : statement sequence
switch (nes_swi)
{ case 1 : statement sequence
break;
case 2 : statement sequence
break;
}
case 2 : statement sequence
switch (nes_swi_2)
{ case 1 : statement sequence
break;
case 2 : statement sequence
break;
}
To use switch construct.
Declaration :
switch ( selection )
{ case 1: statement sequence
break;
case 2: statement sequence
break;
case 3: statement sequence
break;
default : error selection statement
}
To use if-else nested construct.
Declaration :
If (expression_a )
If (expression_b)
If (expressionc)
Statement_a;
else
Statement_b;
else
Statement_c;
else
Statement_d;
To use if-else construct.
Declaration :
if ( Expression ) statement
To work with MATHEMATIC OPERATOR.
| OPERATOR IN C++ | ACTION /MEANING |
| - | Subtraction |
| + | Addition |
| * | Multiplication |
| / | Division |
| % | Modulus Division |
| -- | Decrement |
| ++ | Increment |
| < | Less than |
| <= | Less than or equal |
| > | Greater than |
| >= | Greater then or equal |
| == | Equal |
| != | Not equal |
| && | AND |
| || | OR |
| ! | NOT |
To DECLARE VARIABLE.
int a , b , c ;
short small_figure ;
long long_integer ;
char besh ;
float total_sale , total_dis ;
To work with the BASIC DATA TYPE.
| DATA TYPE | C++ KEYWORD | BITS | RANGE |
| character | char | 8 | 0 to 255 |
| floating point | float | 32 | Approximately 6 digit of precision |
| double floating point | double | 64 | Approximately 12 digit of precision |
| integer | int | 16 | -32768 to 32767 |
| short integer | short | 8 | -128 to 127 |
| long integer | long | 32 | -4294967296 to 4294967295 |
| unsigned integer | unsigned | 16 | 0 to 65535 |
To RUN the project.
- Click on the RUN in the DEBUG menu.
To COMPILE the project.
- Click on the COMPILE in the PROJECT menu .
To PRINT the project
- Click on the PRINT in the file menu and click "OK" to finish.
To SAVE a project after done.
- Click on the SAVE in the FILE menu and name the project with (.cpp)
extension at the end of filename. Click "OK" to finish.
To OPEN a *.cpp project.
- Click on the OPEN in the FILE menu and browse the hard drive / floppy drive
and Click the filename and click "OK" to finish.
