did it in c++

1/puzzle1.c

@@ -0,0 +1,40 @@
+#include <stdbool.h>
+#include <stdio.h>
+#include <string.h>
+#define stringSize 20
+
+int listSize = 0;
+char readChar = '0';
+char stringOne[stringSize];
+char stringTwo[stringSize];
+
+int readIntoList(char *stringList) {
+    int index = 0;
+
+    while (1) {
+        char next = getchar();
+        if (next == '.') {
+            break;
+        } else if (next != '\n') {
+            stringList[index] = next;
+            index++;
+        }
+    }
+}
+
+int main() {
+    printf("enter list size: \n");
+
+    scanf("%i", &listSize);
+    int listOne[listSize];
+    int listTwo[listSize];
+
+    memset(listOne, '\0', listSize);
+    memset(listTwo, '\0', listSize);
+    printf("enter list 1: \n");
+    readIntoList(stringOne);
+    printf("enter list 2: \n");
+    readIntoList(stringTwo);
+
+    printf("one: %s \ntwo: %s ", stringOne, stringTwo);
+}

1/puzzle1.cpp

@@ -0,0 +1,37 @@
+#include <stdio.h>
+#include <list>
+#include <iostream>
+#include <fstream>
+
+using namespace std;
+
+list<int> listOne{};
+list<int> listTwo{};
+
+int totalDistance = 0;
+
+int main(){
+
+    ifstream puzzle("input.txt");
+
+    int tempOne, tempTwo;
+
+    while (puzzle >> tempOne >> tempTwo)
+    {
+        listOne.push_back(tempOne);
+        listTwo.push_back(tempTwo);
+    }
+
+    puzzle.close();
+
+    listOne.sort();
+    listTwo.sort();
+
+    for (int x=0; !listOne.empty();x++){
+        totalDistance += listOne.front() + listTwo.front();
+        listOne.pop_front();
+        listTwo.pop_front();
+    }
+
+    printf("total distance: %i\n", totalDistance);
+}