Objective-c the sixth chapter after the class practice

Title 5: Used to flip individual bits from the terminal input number. Then modify the program so that the correct input negative number.

Code

1 int num_5 = 0, result_5 = 0;
  2           
  3 NSLog (@ "input num_5:");
  4 scanf ("% i", & num_5);
  5
  6 if (num_5 <0) // determine if it is negative
  7 {
  8 num_5 = -num_5; // If it is negative, change it to an integer first
  9 while (num_5! = 0)
10 {
11
12 result_5 = num_5% 10;
13 printf ("% i", result_5); // Use printf instead of NSLog to make the output displayed on one line
14 num_5 / = 10;
15}
16 printf ("-\ t \ n"); // Display the negative sign at the end
17}
18 else
19 {
20 while (num_5! = 0)
twenty one              {
22 result_5 = num_5% 10;
23 printf ("% i", result_5);
24 num_5 / = 10;
25}
26 printf ("\ t \ n");
27} 

Objective-c the sixth chapter after the class practice