move exercises, lecture examples, labs into subfolders

Exercises/C7/string_with_gets.c

@@ -0,0 +1,19 @@
+#include <stdio.h> 
+#include <stdlib.h>
+int main() 
+{ 
+	// Declare variable - maximum 99 characters
+    char str[100]; 
+    
+    // Prompt for text
+    printf("enter some text\n"); 
+    
+    // Store intput in str 
+    gets(str); 
+    
+    // Display a message on the screen
+    printf("you entered : %s\n", str); 
+    
+    // Exit from main
+    return 0; 
+}