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  1. #include <stdio.h>
  2. #include <math.h>
  3.  
  4. int main() {
  5.     float a, b, c, delta, y1, y2;
  6.  
  7.     printf("Enter a, b, c: ");
  8.     scanf("%f %f %f", &a, &b, &c);
  9.  
  10.     delta = b * b - 4 * a * c;
  11.  
  12.     if (delta < 0) {
  13.         printf("No real solution\n");
  14.     } else {
  15.         y1 = (-b + sqrt(delta)) / (2 * a);
  16.         y2 = (-b - sqrt(delta)) / (2 * a);
  17.  
  18.         if (y1 > 0) {
  19.             printf("x1 = %.2f\n",  sqrt(y1));
  20.             printf("x2 = %.2f\n", -sqrt(y1));
  21.         } else if (y1 == 0) {
  22.             printf("x = 0\n");
  23.         }
  24.  
  25.         if (y2 > 0) {
  26.             printf("x3 = %.2f\n",  sqrt(y2));
  27.             printf("x4 = %.2f\n", -sqrt(y2));
  28.         } else if (y2 == 0) {
  29.             printf("x = 0\n");
  30.         }
  31.     }
  32.     return 0;
  33. }
Success #stdin #stdout 0s 5316KB
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Enter a, b, c: x1 = 0.00
x2 = -0.00
https://ideone.com/polb51
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

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