diff --git a/1-5.c b/1-5.c
new file mode 100644
index 0000000..bd4d8b1
--- /dev/null
+++ b/1-5.c
@@ -0,0 +1,8 @@
+#include <stdio.h>
+int main(){
+  int fahr;
+  for (fahr=300; fahr>=0; fahr-=20){
+    printf("%3d %6.1f\n", fahr, (5.0/9.0)*(fahr-32));
+  }
+  return 0;
+}