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The C++ program to solve quadratic equations in standard form is a simple program based on the quadratic formula. Given the coefficients as input, it will solve the equation and output the roots of the equation.
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This is a simple program is intended for intermediate level C++ programmers.
The program is compiled using Dev-C++ 4.9.9.2 version installed on a Windows 7 64-bit PC. You may try other standard C compilers and the program will still work if you use the correct C libraries.
One of the answers says you should try Matlab. If that doesn’t work, here are other possibilities: online interactive code to flowchart converter Code to FlowChart C Algorithm Viewer Automatically convert code to flowchart (30 day free trial). This is a simple program is intended for intermediate level C programmers. The program is compiled using Dev-C 4.9.9.2 version installed on a Windows 7 64-bit PC. You may try other standard C compilers and the program will still work if you use the correct C libraries. Problem Definition. 3) Edraw Max Edraw Max is a flowchart builder software that helps you to make diagrams using ready-made symbols and templates. It allows you to import your drawings to file formats such as PDF, PPT, Word, HTML, etc. Features: You can create a flowchart. Flowchart is a diagrammatic representation of sequence of logical steps of a program. Flowcharts use simple geometric shapes to depict processes and arrows to show relationships and process/data flow. The C standard library provides a large number of library functions (under different header files) for performing common tasks.
Problem Definition
In this program, we solve the quadratic equation using the formula
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When
Where a, b and c are coefficient of the equation which is in the standard form.
How to compute?
The steps to compute the quadratic equation is given below.
Step1:
The program request the input coefficient values a, b and c. When the user input the values, it will compute two terms t1 and t3 and an intermediate term t2.
Step2:
The function term2 () is called in step 2 and returned value of function is assigned to t2. The term2 () function receives the coefficient values – a, b, c and compute the value for t2.
The term () function returns and assign value of b2 – 4ac to t2 and it is useful in understanding the root of the quadratic equation.
For example,
If (t2 < 0), then the roots are not real
If (t2 0) then, there is exactly one root value.
If (t2 > 0) then there are two root values.
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The above condition is checked and printed with output values. Now we need to compute the roots and display the output values.
Step3:
A term t3 is assigned value after taking square root of t2.
Step4:
Finally, we have t1 and t3 to compute two roots of a quadratic equation.
Then root1 and root are calculated and printed immediately.
Flowchart – Program for Quadratic Equations
To understand flow of logic of this program, see the flowchart below.
Program Code – Program for Quadratic Equation
Output
The output of the above program is given below.
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Unlike for and while loops, which test the loop condition at the top of the loop, the do...while loop in C programming checks its condition at the bottom of the loop.
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A do...while loop is similar to a while loop, except the fact that it is guaranteed to execute at least one time.
Syntax
The syntax of a do...while loop in C programming language is −
Notice that the conditional expression appears at the end of the loop, so the statement(s) in the loop executes once before the condition is tested.
If the condition is true, the flow of control jumps back up to do, and the statement(s) in the loop executes again. This process repeats until the given condition becomes false.
Flow Diagram
Dev C 2b 2b Flowchart Template
Example
Dev C 2b 2b Flowchart Example
When the above code is compiled and executed, it produces the following result −