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  • \$\begingroup\$ i just said t before , use i as type char , the actual definition would exceed by 1byte like this return -(-1)**i/16 \$\endgroup\$ Commented May 16, 2015 at 11:40
  • \$\begingroup\$ @Agawa001 , But that returns 6 for h and 7 for t. \$\endgroup\$ Commented May 16, 2015 at 11:42
  • \$\begingroup\$ oh i forgot , i must use power :p \$\endgroup\$ Commented May 16, 2015 at 11:43
  • \$\begingroup\$ Cool guy unfortunately C doesnt have such arithmetic operation thus u have to use -1*pow(-1,*i/16) which makes it waaay longer, in other hand, python and matlab use ** and ^ \$\endgroup\$ Commented May 16, 2015 at 11:56
  • 1
    \$\begingroup\$ @CoolGuy would using puts puts(*i>'h'?"-1":"1"); not be better? (22 bytes) \$\endgroup\$ Commented May 20, 2015 at 12:45