Created
May 12, 2017 06:36
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C program to Find all Roots of a Quadratic equation
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#include <stdio.h> | |
#include <math.h> | |
int main() | |
{ | |
double a, b, c, determinant, root1,root2, realPart, imaginaryPart; | |
printf("Enter coefficients a, b and c: "); | |
scanf("%lf %lf %lf",&a, &b, &c); | |
determinant = b*b-4*a*c; | |
// condition for real and different roots | |
if (determinant > 0) | |
{ | |
// sqrt() function returns square root | |
root1 = (-b+sqrt(determinant))/(2*a); | |
root2 = (-b-sqrt(determinant))/(2*a); | |
printf("root1 = %.2lf and root2 = %.2lf",root1 , root2); | |
} | |
//condition for real and equal roots | |
else if (determinant == 0) | |
{ | |
root1 = root2 = -b/(2*a); | |
printf("root1 = root2 = %.2lf;", root1); | |
} | |
// if roots are not real | |
else | |
{ | |
realPart = -b/(2*a); | |
imaginaryPart = sqrt(-determinant)/(2*a); | |
printf("root1 = %.2lf+%.2lfi and root2 = %.2f-%.2fi", realPart, imaginaryPart, realPart, imaginaryPart); | |
} | |
return 0; | |
} |
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