C++ Program to calculate the roots of a quadratic equation | C++ Program | Class XI

Write a C++ Program to calculate the roots of a quadratic equation

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Write a C++ Program to calculate the roots of a quadratic equation

Calculate the roots of a quadratic equation in C++ Programming Language

Code Sample 1 (for Dev C++ & CodeBlocks)

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#include<iostream> #include<math.h> using namespace std; int main() { int a, b, c, d, r1, r2; cout<<"Program to calculate the roots of a quadratic equation:-"<<endl; cout<<"Enter the value of coefficient of x^2:- \t"; cin>>a; cout<<"Enter the value of coefficient of x:- \t"; cin>>b; cout<<"Enter the value of the constant in the equation:- \t"; cin>>c; d=pow(b,2) - (4*a*c); r1 = (-b + sqrt(d)/(2*a)); r2 = (-b - sqrt(d)/(2*a)); cout<<"The roots of the quadratic equation are - "<<r1<<" and "<<r2<<"."; return(0); }

Code Sample 2 (for Turbo C++) 

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#include<iostream.h> #include<math.h> void main() { clrscr(); int a, b, c, d, r1, r2; cout<<"Program to calculate the roots of a quadratic equation:-"<<endl; cout<<"Enter the value of coefficient of x^2:- \t"; cin>>a; cout<<"Enter the value of coefficient of x:- \t"; cin>>b; cout<<"Enter the value of the constant in the equation:- \t"; cin>>c; d=pow(b,2) - (4*a*c); r1 = (-b + sqrt(d)/(2*a)); r2 = (-b - sqrt(d)/(2*a)); cout<<"The roots of the quadratic equation are - "<<r1<<" and "<<r2<<"."; getch(); }

Sample Output:

Topic covered here from class XI course is Programs on String manipulations and Programs on array manipulations (1D & 2D).

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Know more about stuff related to this practical experiment (Important for Boards):-

• Difference between Dev C++ and Turbo C++.
• C++ Program to find the Product of the Matrices | C++ Program | Class XI
• C++ Program to find the Sum of the Series, 1– x/2! + x^2/3! – x^3/4! + x^4/5! .... | C++ Program | Class XI
• C++ Program to find sum of each row and each column of a Matrix | C++ Program | Class XI
• Qualitative analysis for the identification of the functional group in the organic sample Acetic Acid (Example 1)
• How to find out the mass of salt required to achieve the required concentration of a solution

Reference:-

• Arora, Sumita. Computer Science with C++ for Class - 12
• Arora, Sumita. Computer Science with C++ for Class - 11
• C programming Interview questions and answers [http://www.cquestions.com/]
• The Crazy Programmer [https://www.thecrazyprogrammer.com/]
• Matrix Calculator [https://matrixcalc.org/en/]

For latest syllabus, both theory and practical papers for class XII, check out the CBSE’s official site http://cbseacademic.in/ for more info.

For more awesome coding and programs related to this language log onto http://www.thecrazyprogrammer.com/ or https://www.w3schools.in/.

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