diff --git a/README.md b/README.md
index 25f8f1d..70b55fe 100644
--- a/README.md
+++ b/README.md
@@ -323,7 +323,7 @@ void WritetoFile(STU stu[],int n,int m)
                 {
                         fprintf(fp, "%10.0f", stu[i].score[j]);
                 }
-                fprintf(fp, "10.0f%10.0f\n", stu[i].sum, stu[i].aver);
+                fprintf(fp, "%10.0f%10.0f\n", stu[i].sum, stu[i].aver);
         }
         fclose(fp);
 }