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  1. #include <stdio.h>
  2. #include <locale.h>
  3.  
  4. int sqr(int x);
  5.  
  6. int main()
  7. {
  8.     setlocale(LC_ALL, "Russian");
  9.  
  10.     int a, b, c, 
  11.         x1, x2;
  12.  
  13.     printf("Введите a: ");
  14.     scanf("%d", &a);
  15.  
  16.     printf("Введите b: ");
  17.     scanf("%d", &b);
  18.  
  19.     printf("Введите c: ");
  20.     scanf("%d", &c);
  21.  
  22.     const int D = b * b - (4 * a * c);
  23.  
  24.     if (sqr(D) > 0) 
  25.     {
  26.         x1 = (-b - sqr(D)) / (2 * a);
  27.         x2 = (-b + sqr(D)) / (2 * a);
  28.  
  29.         printf("\n%d\n%d", x1, x2);
  30.     }
  31.     else if (sqr(D) == 0) 
  32.     {
  33.         x1 = -b / (2 * a);
  34.  
  35.         printf("%d", x1);
  36.     }
  37.     else printf("Нет корней.");
  38.  
  39.     return 0;
  40. }
  41.  
  42. int sqr(int x)
  43. {
  44.     for (int j = 1; j < x; j++) 
  45.     {
  46.         if ((j * j) == x) return j;
  47.     }
  48. }
  49.  
  50.  
Success #stdin #stdout 0s 5288KB
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Введите a: Введите b: Введите c: 
3
3
https://ideone.com/ob02KR
language:
C (gcc 8.3)
created:
19 hours ago
visibility:
public

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