added multi function

src/multiplication.c

@@ -0,0 +1,11 @@
+#include "multiplication.h"
+#include <stdio.h>
+
+
+double multi( double ein1, double ein2) {
+    return (ein1 * ein2);
+}
+
+
+    
+

src/multiplication.h

@@ -0,0 +1,4 @@
+#ifndef MULTIPLICATION_H
+#define MULTIPLICATION_H
+extern double multi(double ein1, double ein2);
+#endif // MULTIPLICATION_H

test/test_multiplication.c

@@ -0,0 +1,20 @@
+#ifdef TEST
+
+#include "unity.h"
+
+#include "multiplication.h"
+
+void setUp(void)
+{
+}
+
+void tearDown(void)
+{
+}
+
+void test_multiplication_NeedToImplement(void)
+{
+    TEST_IGNORE_MESSAGE("Need to Implement multiplication");
+}
+
+#endif // TEST