Nested If-else : To find the roots of quadratic equation ax2+bx+c=0 and a!=0

let ax²+bx+c=0: is a quadratic equation
output:
            Enter the values of a,b,c : 1 -5 6
            roots are x1=3  x3= 2


In the above program, a,b,c are the coefficient of quadratic equation. We calculate the discriminant d=b²-4ac. Then using nested if-else statement.

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If-else-If Ladder : Program to calculate the division of a student according to marks obtained

output :
       enter marks in 3 subjects : 90 60 30
       first division

In the above program we can also use if statement in the place of else if . But the time to execute the program is increased.In if statement every condition is checked whether it's true or false. In case of else if : if condition is true then exit, if false then going to check next condition.

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C++ Program to calculate the greatest of three numbers using nested if-else

In the above program, the user entered the values of three numbers a,b&c. First condition is checked (a>b). If this condition is true then comes to condition (a>c). If condition (a>c) is true then first number __ is greatest is print otherwise third number __ is greatest is print.

But if the condition (a>b) is false then it checks for the condition (b>c) . If condition (b>c) is true then second number __ is greatest is print otherwise third number __ is greatest is print.


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C++ Program to check whether a number is even or odd

In this program, we first enter a number (say 10). Then check the condition (10%2). If it gives result zero(0), then then it prints the message number is even and if it is non zero(0),then it prints the message number is odd.


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second program c++ : All arithmetic operatioall

You can use cin to input form the user on runtime
syntax of cin already in the comment of a program


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second program c : All arithmetic operations

c progran of all arithmetic operations

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First program : How to print 'hello world' c&c++

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