C Program To Find Roots of Quadratic Equation

 ROOTS OF QUADRATIC EQUATION

Code :

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

int main()
{
    float a, b, c, root1, root2, disc, imag;

    printf("==========================================\n");
    printf("\tROOTS OF QUADRATIC EQUATION\n");   
    printf("==========================================\n");

    printf("Enter values quadratic equation\n\t ax^2 + bx + c = 0:\n\n");
    printf("\ta = ");
    scanf("%f", &a);
   
    printf("\tb = ");
    scanf("%f", &b);
   
    printf("\tc = ");
    scanf("%f", &c);
   
    printf("\n");
   
    disc = ((b * b) - (4 * a * c));

    if(disc > 0)
    {
        root1 = (-b + sqrt(disc)/2 * a);
        root2 = (-b - sqrt(disc)/2 * a);
       
        printf("Two distinct and Real roots exists,\n %.2f and %.2f\n", root1, root2);
    }   
    else if(disc == 0)
    {
        root1 = root2 = -b / (2 * a);
       
        printf("Two Equal and real roots exists,\n %.2f and %.2f\n", root1, root2);
    }
    else if(disc < 0)
    {
        root1 = root2 = -b / (2 * a);
        imag = sqrt(-disc) / (2 * a);
       
        printf("Two distinct and complex roots exists,\n %.2f + i%.2f and %.2f + i%.2f\n", root1, imag, root2, imag);
    }
    printf("------------------------------------------\n");
    return 0;
}

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