diff --git a/src/funktion.c b/src/funktion.c
index 95db86f..0689f64 100644
--- a/src/funktion.c
+++ b/src/funktion.c
@@ -141,3 +141,9 @@ float Vaddx2(float x2, float z2){
     double result = x2 + z2;
     return result;
 }
+float Vaddx3(float x3, float z3){
+    float X3;
+    X3 = x3 + z3;
+    printf("(%f: \n",X3);
+    return X3;
+}
diff --git a/src/funktion.h b/src/funktion.h
index 207dfd0..519e24a 100644
--- a/src/funktion.h
+++ b/src/funktion.h
@@ -27,5 +27,6 @@ float Vshift(float x1,float s1);
 double Vlength(float x1, float x2, float x3);
 float Vadd(float x1, float z1);
 float Vaddx2(float x2, float z2);
+float Vaddx3(float x3, float z3);
 
 #endif
diff --git a/src/main.c b/src/main.c
index 10d5789..a55e3f5 100644
--- a/src/main.c
+++ b/src/main.c
@@ -6,7 +6,7 @@
 
 int main()
 {   
-    double a,b,c,d,h,x1,s1,x2,x3,z1,z2;
+    double a,b,c,d,h,x1,s1,x2,x3,z1,z2,z3;
     a = getValue('a');
     b = getValue('b');
     h = getValue('h');
@@ -116,4 +116,10 @@ int main()
     x2 = getValue('X');
     z2 = getValue('z');
     Vaddx2(x2,z2);
+
+    printf("z eingeben");
+    x3 = getValue('X');
+    printf("c eingeben");
+    z3 = getValue('z');
+    Vaddx3(x3,z3);
 }