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1 files changed, 51 insertions, 0 deletions
| -rw-r--r-- | pract_SI/Pract. 02/Solutions/task5.cpp | 51 |
diff --git a/pract_SI/Pract. 02/Solutions/task5.cpp b/pract_SI/Pract. 02/Solutions/task5.cpp new file mode 100644 index 0000000..419d6d4 --- /dev/null +++ b/pract_SI/Pract. 02/Solutions/task5.cpp @@ -0,0 +1,51 @@ +#include<iostream> +#include<cmath> +using namespace std; +int main() +{ + double a, b, c; + double root1, root2, imaginary; + double discriminant; + + cout << "Finding the root of the equation a * x^2 + b * x + c = 0\n"; + + cout << "Enter the value of a: "; + cin >> a; + + if (a < 0.00000001) + { + cout << "If a is 0, then this is not a quadratic equation!\n"; + return 1; + } + + cout << "Enter the value of b: "; + cin >> b; + + cout << "Enter the value of c: "; + cin >> c; + + discriminant = (b * b) - (4 * a * c); + + if (discriminant > 0) + { + root1 = (-b + sqrt(discriminant)) / (2 * a); + root2 = (-b - sqrt(discriminant)) / (2 * a); + + cout << "Two distinct and real roots exist: " << root1 << " and " << root2 << endl; + } + else if (discriminant == 0) + { + root1 = root2 = -b / (2 * a); + + cout << "Two equal and real roots exist: " << root1 << " and " << root2 << endl; + } + else if (discriminant < 0) + { + root1 = root2 = -b / (2 * a); + imaginary = sqrt(-discriminant) / (2 * a); + + cout << "Two distinct complex roots exist: " << root1 << "+" << imaginary << "i and " << root2 << "-" << imaginary << "i\n"; + } + + return 0; +}
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