Practical No 3: Develop program to demonstrate use of if statements and its different forms.

Write any Program to check multiple conditions using if statement.

Logic.java

class Logic
{
public static void main( String args[] )
{

int a,b,c;

a= Integer.parseInt(args[0]);
b= Integer.parseInt(args[1]);
c= Integer.parseInt(args[2]);

if(a>b && a>c)
System.out.println("\n\n Greatest number is= "+a);
else if(b>a && b>c)
System.out.println("\n\n Greatest number is= "+b);
else if(c>a && c>b)
System.out.println("\n\n Greatest number is= "+c);
else
System.out.println("\n\n All are equals");



}

}

Output:  

1) List operators used in if conditional statement.
Ans=>  Operators :
                                 1) >
                                 2) <
                                 3) ==
                                 4) !=
                                 5) =
                                 6) &&
                                 7) ||
                                 8) >=
                                 9) <=

2) In if-else construct which part will be executed if condition is true.
Ans=> If part will be executed if condition is true.

3) State the condition when the else part will be executed with example.
Ans=> when if part become false then else part will be executed.
             ex: if( 0 )
                    {

                    }
                    else
                    {

                     }
In this time the else part will execute.

4) Which of the following operator is used in if:
     a. Assignment Operator(=)   b.Comparison Operator(==)
Ans=> b


Exercise:


1) State the output:

1)  

public class NestedIfExample
{
public static void main( String args[] )
{
int num=70;

if( num < 100 )
{
System.out.println("number is less than 100");

if(num  > 50)
{

System.out.println("number is greater than 50");

}
}



}
}

Output:

2) 

class IfStatement
{
public static void main( String args[] )
{
int number = 10;

if( number > 0 )
{
System.out.println(" Number is Positive ");
}

System.out.println(" This statement is always executed  ");

}
}

Output:

2) Write a program to make the use of Logical Operators.

class Logic
{
public static void main(String[] args)
{
    int marks=65;
     
    if(marks<50)
{
        System.out.println("fail");
    }
    else if(marks>=50 && marks<60)
{
      System.out.println("D grade");
    }
    else  if (marks>=60 && marks<70)
{
        System.out.println("C grade");
    }
    else if  (marks>=70 && marks<80)
{
        System.out.println("B grade");
    }
    else if(marks>=80 && marks<90)
{
        System.out.println("A grade");
    }
else if(marks>=90 && marks<100)
{
      System.out.println("A+ grade");
    }
else
{
        System.out.println("Invalid!");
    }
}

}

Output:

3) Write a program to check no is even or odd.

class EvenOdd
{
public static void main( String args[] )
{
int a = Integer.parseInt( args[0] );

if( a%2 == 0  )
System.out.println(" \n\n Number is Even ");
else
System.out.println(" \n\n Number is Odd ");
}


}

Output:

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