diff --git a/c/2022/1/problem.c b/c/2022/1/calorie_counting.c
similarity index 100%
rename from c/2022/1/problem.c
rename to c/2022/1/calorie_counting.c
diff --git a/c/2022/2/problem.c b/c/2022/2/rock_paper_scissors.c
similarity index 100%
rename from c/2022/2/problem.c
rename to c/2022/2/rock_paper_scissors.c
diff --git a/c/2022/3/problem.c b/c/2022/3/rucksack_reorganization.c
similarity index 100%
rename from c/2022/3/problem.c
rename to c/2022/3/rucksack_reorganization.c
diff --git a/c/bin/run b/c/bin/run
index 015441b..dfa7cf1 100755
--- a/c/bin/run
+++ b/c/bin/run
@@ -3,5 +3,13 @@
 year=$1
 day=$2
 
-gcc -o $year/$day/problem $year/$day/problem.c -lm
+mkdir -p $year/$day
+source_file=$(ls $year/$day/*.c)
+
+if [[ -z $source_file ]] ; then
+    echo "No c source file found in $year/$day"
+    exit 1
+fi
+
+gcc -o $year/$day/problem $source_file -lm &&
 time (cat ../data/$year/$day/input.txt | ./$year/$day/problem)