7.0010.c. The decimal value of varb given varb is of datatype char and has the address 4063:

Contents of 4063: 10011100 BUT since varb is of data type (signed) char, we must compliment:

10011100 => 01100011

+ 1

01100100

= -(2⁶ + 2⁵ + 2²) = -(64 + 32 + 4) = -100