CodingOverdose

Sunday 10 June 2018

Lesson 6-Logic operations, And operation, Or operation, Not Operation - coding overdose

JATINDER June 10, 2018 0

Logic operators in c++

&& - and operator
||- or operator
! - not operator

Program 1:- To find greatest among three numbers

#include <iostream>
using namespace std;
int main ()

{

int a,b,c;

cout<<"enter any three numbers a,b,c"<<endl;
cin>>a>>b>>c;

if(a>=b && a>=c)
{
cout<<"a is greatest number";
}

if(b>=a && b>=c)
{
cout<<"b is greatest number";
}

if(c>=a && c>=b)
{
cout<<"c is greatest number";
}

return 0;

}

Program 2:-

The candidate is selected if his age is >= 18 years and height is >=172cm respectively.

#include <iostream>

using namespace std;

int main ()

{

float age,height;

cout<<"enter age and height"<<endl;

cin>>age>>height;

if(age>=18 && height>=172)

{

cout<<"congrats!! candidate selected";

}

else {

cout<<"sory.. candidate not selected";

}

return 0;

}

Program 3:-

Tags # basic tutorial Continue Reading

Lesson 5-Mathematical functions in C++- Coding overdose

JATINDER June 10, 2018 0

Mathematical functions

Required header: #include <cmath>

sqrt(x)	square root
sin(x)	sine of x (in radians)
asin(x)	Inverse Sine of x
cos(x)	cosine of x (in radians)
acos()	Inverse cosine of x
tan(x)	tangent of x (in radians)
atan()	Returns Inverse tangent a Number
abs()	returns absolute value of an argument
log(x)	natural logarithm of x (base e)

log10(x)	logarithm of x to base 10
exp(x)	exponential function
pow(x,y)	x raised to power y
cbrt()	Computes Cube Root of a Number

1.Program to calculate roots of a quadratic equation

#include <iostream>
#include <cmath>
using namespace std;
int main ()

{
float a,b,c,d,real,imag;

cout<<"enter a,b,c"<<endl;
cin>>a>>b>>c;

d=(b*b)-(4*a*c);

cout<<"The given equation is"<<a<<"x^2+"<<b <<"x+"<<c <<endl;
cout<<"The discriminant is" << d <<endl;

if(d>0)
{cout<<"The given equation has two real distinct roots"<<endl;
cout<<"first root is x=" <<(-b+sqrt(d))/(2*a);
cout<<"second root is x=" <<(-b-sqrt(d))/(2*a);
}

if(d==0)
{cout<<"The given equation has two same roots"<<endl;
cout<<"it has two same roots equal to x= " <<-b/(2*a);

}

if (d<0)
{cout<<"The given equation has two imaginary roots"<<endl;
real= -b/(2*a);
imag=(sqrt(-d))/(2*a);
cout<<"first root is x=" <<real <<"+"<< imag<<"i";
cout<<"second root is x=" <<real <<"+"<< imag<<"i";
}

return 0 ;
}

Tags # basic tutorial Continue Reading

C++ program examples:- Mathematics

JATINDER June 10, 2018 0

1.Program to calculate area of a triangle..

Concepts you should know to write this program
:-Float

Formula of area of triangle = 1/2 base x height of trainge

#include <iostream>
using namespace std;
int main ()

{

float b,h,a;

cout<<"enter base of triangle"<<endl;
cin>> b;

cout <<"enter height of triangle"<<endl;
cin>>h;

a=(b*h)/2 ;

cout <<"The area of the triangle is " <<a <<" units";

return 0;
}

2.Program to calculate area of circle

Formula of area of triangle = pi *r* r

#include <iostream>
using namespace std;
int main ()

{

float a,r;

cout<<"enter radius"<<endl;
cin>> r;

a=3.14*r*r;

cout <<"THe area of the circle is" <<a <<" units";

return 0;
}

3.Program to find discriminant of a quadratic equation

Concepts you should know to write this program:-

Float
If else statements
Formula:= d is discriminant and is equal to

(b^2) -(4*a*c)

#include <iostream>
using namespace std;
int main ()

{
float a,b,c,d;

cout<<"enter a";
cin>>a;

cout<<"enter b";
cin>>b;

cout<<"enter c";
cin>>c;

d=b*b-4*a*c;

cout<< "discriminant is"<< d ;

return 0 ;

}

4.Program to find sum of arithmetic progression

#include <iostream>
using namespace std;
int main ()

{
int a,d,n;
float sum;

cout<< "enter the first number of ap series";
cin>>a;

cout<< "enter the difference between the terms";
cin>>d;

cout<< "enter the total terms in the ap series";
cin>>n;

sum=(n*(2*a+(n-1)*d)) /2;

cout <<"The sum of ap series is"<<sum;

return 0;

}

5.Program to find whether number iss even or odd

#include <iostream> using namespace std; int main()

{ int a; cout << "Enter the number: ";
cin >> a; if (a % 2 == 0) { cout << "The given number is EVEN" << endl; }

else { cout << "The given number is ODD" << endl; }
return 0; }

Tags # basic exercises Continue Reading

Wednesday 6 June 2018

Lesson 4-C++ Loops :- While loop, For loop, Do-While loop - Coding overdose

JATINDER June 06, 2018 0

in programming languages, loops are used to execute a set of statements repeatedly, until a particular condition is satisfied.

There are 3 kind of loops in c++
1. While loop
2.For loop
3.Do-While loop

1.While loop

Example1:-counting from 0 to 9 (using while loop)

#include <iostream>
using namespace std;

int main()
{
int x=0;

while (x<=9) {
cout << x<<endl;
x=x+1;
}

return 0;
}

The same code can be executed by for loop as well

2.For LOOP

syntax :-

for ( intitiation point ; termination point ; increment or decrement)

{condition;
}

Example 1:-counting from 0 to 9 (using for loop)

#include <iostream>
using namespace std;
int main ()

{
int x=0;

for ( x=0; x<=9; x=x+1)

{cout<<x <<endl;
}

return 0;

}

Example 2:-Multiplication table

#include <iostream>
using namespace std;
int main()

{

int a;
cout << "Enter a positive integer: ";
cin >> a;

for (int b=1; b<= 10; b=b+1)

{
cout << a << " * " << b << " = " << a * b << endl;
}

return 0;

}

3.Do while loop

The same program that counted 0-9,,,, can also be made using this loop..

The especiality of do while loop is that it tests the condition at last,, whether its true or not..

syntax :-

do{statements;

}
while ( conditions) ;

dont forget the semicolon after while statement

Example 2:-counting from 0 to 9 (using do-while loop)

#include <iostream>
using namespace std;
int main()

{

int x=0;

do {cout<<x<<endl;
x=x+1;}

while (x<=9) ;

return 0;

}