**C program to find roots of a quadratic equation**

The mathematical representation of a Quadratic Equation is ax²+bx+c = 0. If discriminant > 0 then Two Distinct Real Roots will exist for this equation.

Root1= (-b+ √b2 - 4ac) / 2a Root2= (-b- √b2 - 4ac) / 2a

Today, we will learn to find the roots of a quadratic equation.

#include <stdio.h> #include <math.h> /* Used for sqrt() */ void main() { float a, b, c; float root1, root2, imaginary; float discriminant; clrscr(); printf("\n\t\t\t...Welcome To EduNews.Tech... "); printf("\n\nEnter values of a, b, c of quadratic equation : "); scanf("%f%f%f", &a, &b, &c); /* Find discriminant of the equation */ discriminant = (b * b) - (4 * a * c); /* Find the nature of discriminant */ if(discriminant > 0) { root1 = (-b + sqrt(discriminant)) / (2*a); root2 = (-b - sqrt(discriminant)) / (2*a); printf("Two distinct and real roots exists: %.2f and %.2f", root1, root2); } else if(discriminant == 0) { root1 = root2 = -b / (2 * a); printf("Two equal and real roots exists: %.2f and %.2f", root1, root2); } else if(discriminant < 0) { root1 = root2 = -b / (2 * a); imaginary = sqrt(-discriminant) / (2 * a); printf("Two distinct complex roots exists: %.2f + i%.2f and %.2f - i%.2f", root1, imaginary, root2, imaginary); } printf("\n\n\n\n\t\t\tThankyou for Joining Us !"); printf("\n\t\t\t!Regards EduNews !"); getch(); }

**Program Output:**

I hope this post helps you to understand roots of quadratic equation and its implementation in C programming language.

Keep coding 🙂

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