Filename fix, exercise "not done yet" fix (#188)

Author: danwritecode

…metic_operators/arithmetic_operatos_01.c …etic_operators/arithmetic_operators_01.cexercises/19_arithmetic_operators/arithmetic_operatos_01.c renamed to exercises/19_arithmetic_operators/arithmetic_operators_01.c exercises/19_arithmetic_operators/arithmetic_operatos_01.c renamed to exercises/19_arithmetic_operators/arithmetic_operators_01.c

@@ -16,6 +16,8 @@
 
 // Hint: convert number `a` and `b` to binary. 
 
+// ❌ I AM NOT DONE
+
 #include <assert.h>
 #include <limits.h>
 #include <stdbool.h>

exercises/23_bitwise_operators/bitwise_operators_01.c

@@ -9,6 +9,7 @@
  *
  */
 
+// ❌ I AM NOT DONE
 
 #include <assert.h>
 #include <limits.h>

exercises/23_bitwise_operators/bitwise_operators_02.c

@@ -15,6 +15,7 @@
  * 2. Apply the mask to the given byte using the bitwise AND operator.
  */
 
+// ❌ I AM NOT DONE
 
 #include <assert.h>
 #include <limits.h>