C++ Spaß mit Vektoren

vectors.cpp

@@ -0,0 +1,95 @@
+#include <iostream>
+
+template<unsigned int NDim, typename TElem>
+class Vector {
+private:
+    TElem coord[NDim];
+public:
+    Vector() {}
+
+    Vector(const TElem initial) {
+        for(unsigned int i = 0; i < NDim; i++) {
+            coord[i] = initial;
+        }
+    }
+
+    Vector<NDim, TElem>
+    operator+ (const Vector<NDim, TElem>& other)
+    {
+        Vector<NDim, TElem> result;
+        for(unsigned int i = 0; i < NDim; i++) {
+            result[i] = this->coord[i] + other[i];
+        }
+        return result;
+    }
+
+    Vector<NDim, TElem>
+    operator+= (const Vector<NDim, TElem>& other)
+    {
+        for(unsigned int i = 0; i < NDim; i++) {
+            this->coord[i] += other[i];
+        }
+        return *this;
+    }
+
+    Vector<NDim, TElem>
+    operator- ()
+    {
+        Vector<NDim, TElem> result;
+        for(unsigned int i = 0; i < NDim; i++)
+        {
+            result[i] = -this->coord[i];
+        }
+        return result;
+    }
+
+    Vector<NDim, TElem>
+    operator*(TElem factor)
+    {
+        Vector<NDim, TElem> result;
+        for(unsigned int i = 0; i < NDim; i++) {
+            result[i] = this->coord[i] * factor;
+        }
+        return result;
+    }
+
+    TElem& operator[](const unsigned int index) {
+        return this->coord[index];
+    }
+
+    const TElem operator[](const unsigned int index) const {
+        return this->coord[index];
+    }
+};
+
+template<unsigned int NDim>
+void printVector(const Vector<NDim, int> v) {
+    printf("%d", v[0]);
+    for(int i = 1; i < NDim; i++) {
+        printf(", %3d", v[i]);
+    }
+    printf("\n");
+}
+
+#define DIM 3
+
+int main( int argc, char *argv[] ) {
+    Vector<DIM,int> a(0),b(0),c(0),d(0);
+    for(int i = 0; i < DIM; i++) {
+        a[i] = 10*i;
+        b[i] = 5-i;
+    }
+
+    printVector(a);
+    printVector(b);
+
+    c = a + b;
+
+    printVector(c);
+
+    d = a*3 + c*4;
+
+    printVector(d);
+
+	return 0;
+}