Roots of a Quadratic Equation C program

C Programs / Roots of a Quadratic Equation C program

Program Name

Write a C Program for Roots of a Quadratic Equation C program.

Theory
Quadratic Equation C program are calculated

Program Code


#include<stdio.h>  
#include<math.h>   

int main()  
{  
float a, b, c, determinant, r1, r2, real, img;  
printf("\n Enter a,b,c values: \n ");  
scanf("%f %f %f", &a, &b, &c);  

determinant = b * b - 4 * a * c; 
if (determinant > 0)  
{  
r1 = (-b + sqrt(determinant)) / (2 * a);  
r2 = (-b + sqrt(determinant)) / (2 * a);  
printf("\n r1 value = %.2f and r2 value = %.2f", r1, r2);  
}  
else if(determinant == 0)  
{  
r1 = r2 = -b / (2 * a); 
printf("Both Roots Are Equal");  
printf("\n r1 value = %.2f and r2 value= %.2f", r1, r2);  
}  
else {  
real = -b / (2 * a);  
img = sqrt(-determinant) / (2 * a);  
printf("\n r1 value = %.2f + %.2fi and r2 value = %.2f - %.2fi ", real, img, real, img);  
}  
return 0;
}

Input

 Enter a,b,c values: 
 5 6 1

Output

 r1 value = -0.20 and r2 value = -0.20

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