From 3d602be8f5e8897322b07c6d92d6ec26cd59aa7e Mon Sep 17 00:00:00 2001
From: Jack-Benny Persson <jack-benny@cyberinfo.se>
Date: Wed, 14 Oct 2015 02:26:35 +0200
Subject: [PATCH] Starting tinkering with text

---
 vagen_till_c/ch2/text1.c       | 10 ++++++++++
 vagen_till_c/ch2/text2.c       | 23 +++++++++++++++++++++++
 vagen_till_c/ch2/text2_safer.c | 27 +++++++++++++++++++++++++++
 3 files changed, 60 insertions(+)
 create mode 100644 vagen_till_c/ch2/text1.c
 create mode 100644 vagen_till_c/ch2/text2.c
 create mode 100644 vagen_till_c/ch2/text2_safer.c

diff --git a/vagen_till_c/ch2/text1.c b/vagen_till_c/ch2/text1.c
new file mode 100644
index 0000000..0dde580
--- /dev/null
+++ b/vagen_till_c/ch2/text1.c
@@ -0,0 +1,10 @@
+#include <stdio.h>
+
+int main()
+{
+    char name[20];
+    printf("Enter your name: "); 
+    // scanf("%s", name); // Unsafe since name is limited to 20 characters
+    scanf("%19s", name); // Much safer
+    printf("Hello %s\n", name);
+}
diff --git a/vagen_till_c/ch2/text2.c b/vagen_till_c/ch2/text2.c
new file mode 100644
index 0000000..22a4b47
--- /dev/null
+++ b/vagen_till_c/ch2/text2.c
@@ -0,0 +1,23 @@
+#include <stdio.h>
+
+/* Instead of scanf we use getchar to be able to read the entire name, including
+ * spaces in between first- and lastname.
+ */
+
+int main()
+{
+    char name[20], c;
+    int i;
+
+    printf("Enter your name: ");
+    i = 0; // Start with i = 0 for name
+    while ((c = getchar()) != '\n') // Get characters for as long as it's not a
+    {                               // newline character.
+        name[i] = c;                // For each loop, put 'c' into name[i] where
+        i++;                        // 'i' is it's current position, increase i
+    }                               // for each itteration.
+    name[i] = '\0';                 // Then put a '\0' character at the end of
+    printf("Hello %s\n", name);     // name to declare end of text.
+
+    return 0;
+}
diff --git a/vagen_till_c/ch2/text2_safer.c b/vagen_till_c/ch2/text2_safer.c
new file mode 100644
index 0000000..8c1fb5a
--- /dev/null
+++ b/vagen_till_c/ch2/text2_safer.c
@@ -0,0 +1,27 @@
+#include <stdio.h>
+
+/* Instead of scanf we use getchar to be able to read the entire name, including
+ * spaces in between first- and lastname.
+ */
+
+int main()
+{
+    char name[20], c;
+    int i;
+
+    printf("Enter your name: ");
+    i = 0; // Start with i = 0 for name
+    while ((c = getchar()) != '\n') // Get characters for as long as it's not a
+    {                               // newline character.
+        name[i] = c;                // For each loop, put 'c' into name[i] where
+        i++;                        // 'i' is it's current position, increase i
+        if ( i >= 19 )              // for each itteration.
+        {
+            break;                  // If we exceed 19 characters, break out of
+        }                           // loop to avoid overflow.
+    }                               
+    name[i] = '\0';                 // Then put a '\0' character at the end of
+    printf("Hello %s\n", name);     // name to declare end of text.
+
+    return 0;
+}