diff --git a/src/multiplication.c b/src/multiplication.c
index 30e335c..d9cca83 100644
--- a/src/multiplication.c
+++ b/src/multiplication.c
@@ -10,6 +10,10 @@ double square(double x) {
     return x * x;
 }
 
+int multiply_three_integers(int a, int b, int c) {
+    return a * b * c;
+}
+
 
 
 
diff --git a/src/multiplication.h b/src/multiplication.h
index c16d9ca..441d28a 100644
--- a/src/multiplication.h
+++ b/src/multiplication.h
@@ -2,5 +2,6 @@
 #define MULTIPLICATION_H
 extern double multi(double ein1, double ein2);
 double square(double x);
+int multiply_three_integers(int a, int b, int c);
 #endif // MULTIPLICATION_H