diff --git a/week-048.md b/week-048.md
index 54cf10d6..5d9902af 100644
--- a/week-048.md
+++ b/week-048.md
@@ -45,6 +45,14 @@ int main(void){
 
 Read all lines from a file, each containing 4 numbers, and print the numbers
 
+file numbers.txt:
+```
+1 2 3 54
+1.2 3 4 6
+0 1 2 3
+```
+
+
 ```
 #include <stdio.h>
 int main(void){