diff --git a/basic/5_function.c b/basic/5_function.c
new file mode 100644
index 0000000..ea5b804
--- /dev/null
+++ b/basic/5_function.c
@@ -0,0 +1,14 @@
+#include <stdio.h>
+
+int add(int a, int b)
+{
+    return a + b;
+}
+
+int main()
+{
+    int sum = add(5, 3);
+    printf("Sum: %d\n", sum);
+
+    return 0;
+}
\ No newline at end of file