> ./a.out
Please enter a line of text for encryption.
;alwjoie 23@@R29ru $#%^&lksfoi wow! 
Enter a shift value between 1 and 7 inclusive: 200
Enter a shift value between 1 and 7 inclusive: 0
Enter a shift value between 1 and 7 inclusive: -32
Enter a shift value between 1 and 7 inclusive: 8
Enter a shift value between 1 and 7 inclusive: 3

Your line of text:
;alwjoie 23@@R29ru $#%^&lksfoi wow1!
Complement encryption:
Ğ?????? ?̿???ƍ? ??ڡٓ????? ?????
Complement decryption:
;alwjoie 23@@R29ru $#%^&lksfoi wow1!

Complement with 1st bit masked to be a 0:
 ML??-MF
 [\Z!Y
     N^
Masked complement decrypted:
???????? ????Ҳ?
 ???ަ??
      ??? ?????

Your original text in integer form:
59 97 108 119 106 111 105 101 32 50 51 64 64 82 50 57 114 117 32 36 35
37 94 38 108 107 115 102 111 105 32 119 111 119 49 33 
Your input left shift encrypted by 3:
472 776 864 952 848 888 840 808 256 400 408 512 512 656 400 456 912
936 256 288 280 296 752 304 864 856 920 816 888 840 256 952 888 952
392 264 
Your 2nd encryption decrypted:
59 97 108 119 106 111 105 101 32 50 51 64 64 82 50 57 114 117 32 36 35
37 94 38 108 107 115 102 111 105 32 119 111 119 49 33