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Answer» PROGRAM to find all the roots of a quadratic equation
C 1
#include
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#include 4
int main()
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{
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DOUBLE a, b, c, discriminant, root1, root2, realPart, imaginaryPart;
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printf("Enter coefficients a, b and c: ");
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scanf(“%lf %lf %lf”,&a, &b, &c);
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discriminant = b*b-4*a*c;
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// CONDITION for real and different roots
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if (discriminant > 0)
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{
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// sqrt() function returns square root
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root1 = (-b+sqrt(discriminant))/(2*a);
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root2 = (-b-sqrt(discriminant))/(2*a);
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printf("root1 = %.2lf and root2 = %.2lf",root1 , root2);
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}
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//condition for real and equal roots
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else if (discriminant == 0)
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{
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root1 = root2 = -b/(2*a);
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Output
Input- Enter coefficients a, b and c: 1 2 3 Output- root1 =-1+1.41421 and root2 =-1+1.41421
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