Added a small C++ project

1 files changed, 37 insertions, 0 deletions

diff --git a/C++/trig-functions.cpp b/C++/trig-functions.cpp
new file mode 100644
index 0000000..ccc4ad5
--- /dev/null
+++ b/C++/trig-functions.cpp
@@ -0,0 +1,37 @@
+#include <iostream>
+#include <cmath>
+
+using namespace std;
+
+int main()
+{
+    const double degr = 360;
+    const int func = 4;
+    
+    double rad = degr * M_PI / 180.0;
+
+    switch(func) {
+        case 1: // sin
+            printf("sin%.f = %.4f\n", degr, sin(rad));
+            break;
+        case 2: // cos
+            printf("cos%.f = %.4f\n", degr, cos(rad));
+            break;
+        case 3: // tan
+            if (rad == M_PI_2 || rad == 3 * M_PI_2)
+                cout << "Division by 0!" << endl;
+            else
+                printf("tg%.f = %.4f\n", degr, tan(rad));
+            break;
+        case 4: // cotan
+            if (fmod(rad, M_PI) == 0)
+                cout << "Division by 0!" << endl;
+            else
+                printf("cotg%.f = %.4f\n", degr, 1 / tan(rad));
+            break;
+        default:
+            cout << "Wrong function number!" << endl;
+            break;
+    }
+   return 0;
+}