How to Write If-Else in Assembly?
How Do You Write the If Else Statement Below in Assembly Languange? C Code: If ( Input < Waterlevel) { Mc = 1; } Else If ( Input == Waterlevel) { Mc = 0; }...
How do you write the if else statement below in assembly languange?
C Code:
If ( input < WaterLevel)
{
MC = 1;
}
else if ( input == WaterLevel)
{
MC = 0;
}
Pseudocode
If input < Water Level
Send 1 to microcontroller
Turn Motor On
Else if input == Water Level
Send 0 to microcontroller
Turn Motor Off
Incomplete Assembly: (MC- Microcontroller)
CMP Input, WaterLevel
MOV word[MC], 1
MOV word[MC], 2
2 Answers
If we want to do something in C like:
if (ax < bx)
{
X = -1;
}
else
{
X = 1;
}
it would look in Assembly like this:
cmp ax, bx
jl Less
mov word [X], 1
jmp Both
Less:
mov word [X], -1
Both:
Not knowing the particular assembly language you are using, I'll write this out in pseudocode:
compare input to waterlevel
if less, jump to A
if equal, jump to B
jump to C
A:
send 1 to microcontroller
turn motor on
jump to C
B:
send 0 to microcontroller
turn motor off
C:
...
For the first three commands: most assembly languages have conditional branch commands to test the value of the zero or sign bit and jump or not according to whether the bit is set.
James Sterling reports on renewable energy developments, climate policy, ecological conservation, and green tech innovations around the globe.
