Tested the use of sizeof

vagen_till_c/ch2/text2_safe_functions.c

@@ -0,0 +1,29 @@
+#include <stdio.h>
+
+void readline(int s, char line[])
+{
+    char c;
+    int i;
+    i = 0;
+
+    while (( c = getchar()) != '\n')
+    {
+        line[i] = c;
+        i++;
+        if (i >= s-1)
+        {
+            break;
+        }
+    }
+    line[i] = '\0';
+}
+
+int main()
+{
+    char name[20];
+    int size;
+    size = sizeof(name);
+    printf("Enter your name: ");
+    readline(size, name);
+    printf("Hello %s\n", name);
+}