Insert a piece of assembler code into the C-program to calculate the sum of two variables. Tip: You can use this program, which increments a variable, as a basis. Just add the second variable and...

Insert a piece of assembler code into the C-program to calculate the sum of two variables.

Tip: You can use this program, which increments a variable, as a basis. Just add the second variable and exchange the INC instruction for ADD.

Source:

.., Assem… What? What assembler?
Selection of machine instructions with description.

with explanation plz. Thanks