AppendixLab Manual for

Programming Skills

1

Symbols used in Writing Programs { opening curly bracket

} closing curly bracket

# hash sign or number sign (shift+3)

( ) small brackets

“aaaa ” double quotes

‘ aaaa ‘ single quotes

, comma

; semicolon

void main( ) main function

// is used for making comment in one line

/* is used for making comment in block form */ 2

Unit: 1Objective: To understand the concept of comments, input ,output

Statements and data types .

//PROGRAM-1 to demonstrate cout ... COMMENTS

// is used for making comment in program

#include<iostream> //PREPROCESSOR

void main( ) // FUNCTION WITH RETURN TYPE VOID

{ //Beginning

cout<<"WELCOME TO VC++ World "<<endl; // cout IS AN OBJECT IN C++, endl IS END OF LINE,

cout<<“Warning! Get ready”<<endl;

//; IS CALLED TERMINATOR.

} // End

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Unit: 1Program Explanation

#include <iostream> Include directive tells the compiler

Where to find information about input and output that are used in

Your program cout (see-out) used for output to the monitor “<<“ is the insertion operator ‘\n’ causes a new line to be started on the monitor

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Unit: 1//PROGRAM-2 to demonstrate cin cout (int, float,char)...#include<iostream>

void main( )

{

int a;

float b;

char c;

cout<<"ENTER AN INTEGER VALUE"<<endl;

cin>>a;

cout<<"ENTER A FLOAT VALUE"<<endl;

cin>>b;

cout<<"ENTER A CHARACTER OR Alphabet"<<endl;

cin>>c;

cout<<"INTEGER= "<<a<<"\tFLOAT= "<<b<<"\tCHARECTER= "<<c<<endl;

}

5

Unit: 1 Program Explanation

cin >> a;

cin (see-in) used for input from the keyboard

“>>” extracts data from the keyboard

Think of cin as a name for the keyboard “>>” points from the keyboard to a variable where the data is stored

6

Unit: 1//PROGRAM-3 to find Sum and Average of two numbers.

#include<iostream>

void main( )

{

folat a,b;

float sum,avg;

cout<<"ENTER TWO NUMBERS"<<endl;

cin>>a>>b;

sum = a + b;

avg = sum/2;

cout<<"SUM = "<<sum<<"\n AVARAGE = "<<avg<<endl;

}

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Unit: 1//PROGRAM-4 to find Sum and Average of three numbers.

#include<iostream>

void main( )

{

folat a,b,c;

float sum,avg;

cout<<"ENTER THREE NUMBERS"<<endl;

cin>>a>>b>>c;

sum = a + b + c;

avg = sum/3;

cout<<"SUM = "<<sum<<"\n AVARAGE = "<<avg<<endl;

}

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Uint: 1Check Your Programming skills:

Write a C++ program to find the difference between two

Numbers? Write a C++ program to find the product of three numbers? Convert feet to inches given 1 feet= 12 inches?

9

Unit: 2Objectives: To implement the concept of operators

// PROGRAM-5 to find area of a circle.

#include<iostream>

void main( )

{

float r,area;

const float pi=3.147;

cout<<"ENTER RADIUS OF CIRCLE"<<endl;

cin>>r;

area = pi*r*r;

cout<<"AREA OF CIRCLE = "<<area<<endl;

}

10

Unit: 2//Program -6 to display Pay slip of an employee

#include<iostream>

void main ()

{

double GSal,NSal,ded,basic,da;

const double Housing=1000.00, TA=500.00;

cout<<"Enter Basic Salary\n";

cin>>basic;

cout<<"Enter Deduction Amount\n";

cin>>ded;

da=basic*0.2;

GSal=basic+da+Housing+TA;

NSal=GSal-ded;11

Unit: 2…..

cout<<"\t\t\t\tBasic :\t"<<basic<<endl;

cout<<"\t\t\t\tDA :\t"<<da<<endl;

cout<<"\t\t\t\tHousing :\t"<<Housing<<endl;

cout<<"\t\t\t\tTravelling :\t"<<TA<<endl;

cout<<"\t\t\t\tGross salary :\t"<<GSal<<endl;

cout<<"\t\t\t\tDeduction :\t"<<ded<<endl;

cout<<"\t\t\t\tNet Salary :\t"<<NSal<<endl<<endl<<endl;

}

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Unit: 2Check Your Programming skills

Write a C++ program to find the area of Square? Write a C++ program to find the volume of Square? Convert centigrade to Fahrenheit given F=((C/5)*9) + 32? Write a C++ program to create an invoice of item?

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Unit: 3Objectives:To understand the concepts of conditional statements

Or control structure.( if – else )

//Program -7 to find Number is MAX or MIN#include<iostream>

void main()

{

int a,b;

cout<<"Enter two numbers\n";

cin>>a>>b;

if(a>b)

cout<<a<<" is MAXIMUM "<<b<<" is MINIMUM\n";

else

cout<<b<<" is MAXIMUM "<<a<<" is MINIMUM\n";

}14

Unit: 3//Program -8 to find number is ODD OR EVEN

#include<iostream>

void main()

{

int num;

cout<<"Enter a number\n";

cin>>num;

if(num%2==0)

cout<<num<<" is an Even Number\n";

else

cout<<num<<" is an Odd Number\n";

}

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Unit: 3//Program -9 to find the Grade of students

#include<iostream>

void main()

{

int mark;

char grade;

cout<<"Enter mark";

cin >> mark;

if(mark >= 90 && mark <= 100 )

grade='A';

if(mark >= 80 && mark <= 89 )

grade='B';

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Unit: 3……

if(mark >= 70 && mark <= 79 )

grade='C';

if(mark >= 60 && mark <= 69 )

grade='D';

if(mark < 60 )

grade='F';

cout<<"Mark"<<"\t"<<"Grade"<<endl;

cout<<mark<<"\t"<<grade<<endl;

 

}

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Unit: 3Check Your Programming Skills:

Write a C++ program to find the largest among three numbers by

using if-else? Write a C++ program to find whether the given number is Prime

number or not by using if-else? Write a C++ program to find whether the given number is

divisible of 5 or not by using if-else?

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Unit: 4Objectives:To understand the concepts of conditional statements

Or control structure.( Switch – Case )//Program-10 to check the day of week by using SWITCH-CASE

#include<iostream>

void main()

{

int x;

cout<<"Enter number"<<endl;

cin>>x;

switch(x)

{

case 1:

cout<<"Saturday"<<endl;

break;19

Unit: 4……

case 2:

cout<<"Sunday"<<endl;

break;

case 3:

cout<<"Monday"<<endl;

break;

case 4:

cout<<"Tuesday"<<endl;

break;

case 5:

cout<<"Wednesday"<<endl;

break;20

Unit: 4……

case 6:

cout<<"Thursday"<<endl;

break;

case 7:

cout<<"Friday"<<endl;

break;

default:

cout<<"Error"<<endl;

}

}

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Unit: 4// Program- 11 Menu driven program ( + , * , - , %) using

switch case statement

#include<iostream>

void main()

{

int n1, n2;

char op;

cout<<"Enter first number"; cin >> n1;

cout<<"Enter second number"; cin >> n2;

cout<<"Enter operator(*, /, + -)"; cin >> op;

switch (op)

{

case '*‘:cout<<n1<<op<<n2<<"="<<(n1*n2)<<endl;break;

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Unit: 4…..

case '/‘:cout<<n1<<op<<n2<<"="<<(n1/n2)<<endl;break;

case '+‘:cout<<n1<<op<<n2<<"="<<(n1+n2)<<endl;break;

case '-‘:cout<<n1<<op<<n2<<"="<<(n1-n2)<<endl;break;

default:cout<<"Invalid oprator"<<endl;break;

} }

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Unit: 4Check Your Programming Skills:

Write a C++ program to find month of years by using a

switch case statement? Write a menu driven program to calculate different currency

Conversions?

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Unit: 5Objectives:To understand the concepts of conditional statements

Or control structure.( Loops: FOR, WHILE, DO WHILE )// Program-12 to print natural numbers from 1 to 30 using FOR loop

#include <iostream>

void main()

{

int i;

for (i=0;i<=30;i++)

{

cout<<" "<<"i=";

cout<<i<<endl;

}

}25

Unit: 5// Program-13 to print natural numbers from 1 to 30 using

WHILE loop

#include<iostream>

void main()

{

int a=1;

while(a<=30)

{

cout<<a<<endl;

a++;

}

}

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Unit: 5// Program-14 to print natural numbers from 1 to 30 using

DO WHILE loop

#include<iostream>

void main()

{

int a=1;

do

{

cout<<a<<endl;

a++;

}

while(a<=30);

}27

Unit: 5//Program -15 to display first 10 Odd numbers using FOR loop

#include <iostream>

void main()

{

int i;

for (i=1;i<=20;i=i+2)

cout<<" i="<<i<<endl;

}

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Unit: 5//Program-17 to display first 10 Odd numbers using

WHILE loop

#include<iostream>

void main()

{

int a=1;

while(a<=20)

{

cout<<a<<endl;

a=a+2;

}

}

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Unit: 5//Program-18 to display first 10 Odd numbers using

DO WHILE loop

#include<iostream>

void main()

{

int a=1;

do

{

cout<<a<<endl;

a=a+2;

}

while(a<=20);

}30

Unit: 5//Program-19 to find the Factorial of Number using do while loop

#include<iostream>

void main()

{

int n,i=1,fact=1;

cout<<" enter the number ";

cin>>n;

if(n>=0)

{

do

{

fact=fact*i;

i++;

}31

Unit: 5…..

while(i<=n);

cout<<"fact="<<fact<<"\n";

}}

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Unit: 5Check Your Programming Skills:

Write a C++ program to display first 10 even numbers using

For loop? Write a C++ program to display first 10 even numbers using

WHILE loop? Write a C++ program to display first 10 even numbers using

DO WHILE loop? Write a C++ program to find the Factorial of Number using

For loop?

Write a C++ program to print all prime numbers between two

limits by using do while loop?

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Unit: 6Objectives:To understand the concepts of nested loops

// Program-20 Program to display stars in a triangle shape

#include <iostream>

void main()

{

int i,j,k,n,m;

cout<<"Enter a number";

cin>>n;

m=n;

for(i=0;i<n;i++) // * * *

{ // * *

for(j=0;j<i;j++) // *

cout<<" ";

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Unit: 6…..

for(k=0;k<m;k++)

cout<<" *";

cout<<endl;

m--;

}

}

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Unit: 6Check Your Programming Skills: Write a C++ program to display different types of triangles

* * * * * * * * * * * *

* * * * * * * * * * * *

* * * * * * * * * * * *

* * * * * * * * * * * *

* * * * * * * * * * * * Write a C++ program to display following patterns?

* * * * * * *

* * * * * * * * *

* * * * * * * * * * *

* * * * * * * * *

*36

Unit: 7Objectives:To understand the concept of arrays

// Program-21 program to store 5 numbers in an array then

print them

#include<iostream>

void main()

{

int a[5],i;

for(i=0;i<5;i++)

{

cout<<"enter any Number :"<<endl;

cin>>a[i];

}

37

Unit: 7…..

cout<<"The Elements are as below : "<<endl;

for(i=0;i<5;i++)

{

cout<<a[i]<<endl;

}

}

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Unit: 7// Program-23 program using arrays for checking Maximum

number and Minimum number among elements

#include <iostream>

void main()

{

int a[8],i,max,min;

cout<<"Enter 8 number:"<<endl;

for(i=0;i<8;i++)

cin>>a[i];

max=min=a[0];

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Unit: 7…..

for(i=0;i<8;i++)

{ if (a[i]>max)

max=a[i];

if (a[i]<min)

min=a[i];

}

cout<<"Maximum number="<<max<<endl;

cout<<"Minimum number="<<min<<endl;

}

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Unit: 7Check Your Programming Skills:

Write a C++ program to store 5 numbers in an array then print

them in reverse order? Write a C++ program to display following patterns?

41

Unit: 8Objectives:To implement the concept of function.

// Program-24 to Add two numbers using function

#include <iostream>

int add(int x, int y);

void main()

{

int a, b;

cout<<" Enter value of a ";

cin>>a;

cout<<" Enter value of b ";

cin>>b;

add(a,b);

}

42

Unit: 8…..

int add(int x, int y)

{

int res;

res = x+y;

cout<<" Sum = "<<res<<endl;

return res;

}

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Unit: 8// Program-25 to find the factorial of a number by using function

#include<iostream>

int fact(int);

void main()

{

int x,f;

cout<<"enter the number";

cin>>x;

f=fact(x);

cout<<"The factorial"<<f;

}

44

Unit: 8….

int fact(int a)

{

int i,f=1;

for(i=1;i<=a;i++)

f=f*i;

return f;

}

45

Unit: 8Check Your Programming Skills:

Write a C++ program to calculate difference of two numbers by

using functions? Write a C++ program to calculate the Multiplication of two

numbers by using functions? Write a C++ program to calculate the square of any integer by

using functions? Write a C++ program to calculate the square root of any integer

by using functions?

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