Print out decimal and hexadecimal values of input string characters.
Usage:
./ascii "Hello World!"
CHAR DEC HEX
'H' 72 0x48
'e' 101 0x65
'l' 108 0x6c
'l' 108 0x6c
'o' 111 0x6f
' ' 32 0x20
'W' 87 0x57
'o' 111 0x6f
'r' 114 0x72
'l' 108 0x6c
'd' 100 0x64
'!' 33 0x21