Starting tinkering with text

vagen_till_c/ch2/text1.c

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+#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);
+}

vagen_till_c/ch2/text2.c

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+#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;
+}

vagen_till_c/ch2/text2_safer.c

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+#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;
+}