diff --git a/src/convert_C_to_F.c b/src/convert_C_to_F.c
new file mode 100644
index 0000000..ddbdd3e
--- /dev/null
+++ b/src/convert_C_to_F.c
@@ -0,0 +1,19 @@
+#include "stdio.h"
+#include "convert_C_to_F.h"
+
+float convert_temperature(float value, char from_unit, char to_unit) {
+    float result;
+
+    if (from_unit == 'c' && to_unit == 'f') {
+        result = (value * 9 / 5) + 32; // Celsius to Fahrenheit
+    } else if (from_unit == 'f' && to_unit == 'c') {
+        result = (value - 32) * 5 / 9; // Fahrenheit to Celsius
+    } else {
+        printf("Invalid units or conversion not supported.\n");
+        result = -1; // Error code
+    }
+
+    return result;
+}
+
+
diff --git a/src/convert_C_to_F.h b/src/convert_C_to_F.h
new file mode 100644
index 0000000..3981936
--- /dev/null
+++ b/src/convert_C_to_F.h
@@ -0,0 +1,7 @@
+
+#ifndef THEADMIRALS_CONVERT_C_TO_F_H
+#define THEADMIRALS_CONVERT_C_TO_F_H
+
+float convert_temperature(float value, char from_unit, char to_unit);
+
+#endif //THEADMIRALS_CONVERT_C_TO_F_H