From c4981436af5e55ce8c944a55a0cc81958ef08e40 Mon Sep 17 00:00:00 2001
From: juan <juancloudcomputing@protonmail.com>
Date: Mon, 25 Oct 2021 20:25:25 +0800
Subject: [PATCH] add 1 - 2

---
 pset5/1-numbers.c | 25 +++++++++++++++++++++++++
 pset5/2-swap.c    | 32 ++++++++++++++++++++++++++++++++
 2 files changed, 57 insertions(+)
 create mode 100644 pset5/1-numbers.c
 create mode 100644 pset5/2-swap.c

diff --git a/pset5/1-numbers.c b/pset5/1-numbers.c
new file mode 100644
index 0000000..127eb5d
--- /dev/null
+++ b/pset5/1-numbers.c
@@ -0,0 +1,25 @@
+#include <stdio.h>
+
+int main(void) {
+  // To store answer
+  int nums[10];
+  long long n;
+  int i = 0;
+
+  scanf("%lld", &n);
+  while (n > 0) {
+    nums[i] = n % 10;
+    n /= 10;
+    i++;
+  }
+
+  for (int j = i - 1; j >= 0; j--) {
+    if (j == 0) {
+      printf("%i\n", nums[j]);
+    } else {
+      printf("%i ", nums[j]);
+    }
+  }
+
+  return 0;
+}
diff --git a/pset5/2-swap.c b/pset5/2-swap.c
new file mode 100644
index 0000000..685f98f
--- /dev/null
+++ b/pset5/2-swap.c
@@ -0,0 +1,32 @@
+#include <stdio.h>
+
+// Function prototypes
+void swap(int *a, int *b);
+
+int main(void) {
+  // Initialize variables
+  int n;
+  int length = 0;
+  int nums[10];
+
+  // Get input
+  scanf("%d", &n);
+
+  // Tabulate nums[]
+  while (n > 0) {
+    nums[length] = n % 10;
+    n /= 10;
+    length++;
+  }
+
+  // See if anything is wrong
+  if (nums[0] == 0) {
+    printf("The number cannot be changed.\n");
+  } else { // Print answer
+    for (int i = 0; i < length; i++) {
+      printf("%i", nums[i]);
+    }
+		printf("\n");
+  }
+  return 0;
+}