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  1. #include <stdio.h>
  2. #include <math.h>
  3.  
  4. int main(void) {
  5.  
  6.     int a, b, c;
  7.     double disc, root1, root2;
  8.  
  9.     // Read in the coefficients for the quadratic.
  10.     printf("Enter in a, b and c from your quadratic equation.\n");
  11.     printf("Please enter values so the equation has real roots.\n");
  12.     scanf("%d%d%d", &a, &b, &c);
  13.  
  14.     // Calculate the discriminant.
  15.     disc = pow(b,2) - 4*a*c;
  16.  
  17.     root1 = (-b + sqrt(b*b-4*a*c))/(2*a);
  18.     root2 = (-b - sqrt(disc))/(2*a);
  19.     printf("The roots are %.2lf and %.2lf.\n", root1, root2);
  20.  
  21.     return 0;
  22. }
Success #stdin #stdout 0.01s 5276KB
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stdin
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Standard input is empty
stdout
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Enter in a, b and c from your quadratic equation.
Please enter values so the equation has real roots.
The roots are 48099.87 and -0.00.
https://ideone.com/oWYdh9
language:
C (gcc 8.3)
created:
12 days ago
visibility:
public

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