5A_4

ConsoleApplication1/ConsoleApplication1.cpp

@@ -1,8 +1,29 @@
-#include <iostream>
+#include <iostream>
+#include <iomanip>
 
 using namespace std;
 
 int main()
 {
-    cout << "Hello World!" << endl;
+    cout << setprecision(2);
-}
+    float a, b, c;
+    cout << "Podaj a: ", cin >> a;
+    cout << "Podaj b: ", cin >> b;
+    cout << "Podaj c: ", cin >> c;
+
+    cout << "Rownanie: " << a << "x^2 + " << b << "x + " << c << " = 0" << endl;
+
+    float delta = (b * b) - (4 * a * c);
+    if (delta < 0) cout << "Brak pierwiastkow" << endl;
+    else if (delta == 0) {
+        float x = -b / (2 * a);
+        cout << "1 pierwiastek: x = " << x << endl;
+    }
+    else {
+        float x1, x2;
+        float sq = sqrt(delta);
+        x1 = (-b - sq) / (2 * a);
+        x2 = (-b + sq) / (2 * a);
+        cout << "2 pierwiastki: x1 = " << x1 << ", x2 = " << x2 << endl;
+    }
+}