program ConCalculator;
#include("stdlib.hhf");
static
LabelPointer:dword := &Start; // Pointer to the 'Start' label.
begin ConCalculator;
Start: // Label for the start of the program.
stdout.put("Console Calculator", nl, nl); // Print out text.
/////////////////////////////////////////////////////////////////////////////////////////////////
GetValOne: // Label for next function that gets first value from user input.
stdin.readLn(); // Let the user give their input.
stdin.geti32(); // Store a 32bit integer in EAX.
push(eax); // Store the value of EAX on the stack.
xor(eax,eax); // Clear EAX of any data.
/////////////////////////////////////////////////////////////////////////////////////////////////
GetOperation: // Label for next function that gets a mathematical operation from user input.
stdin.readLn(); // Let the user give their input.
stdin.getc(); // Store a character in AX.
mov(ax,bx); // Move the operation data from AX into BX.
xor(ax,ax); // Clear EAX of any data.
/////////////////////////////////////////////////////////////////////////////////////////////////
GetValTwo: // Label for next function that gets second value from user input.
stdin.readLn(); // Let the user give their input.
stdin.geti32(); // Store a 32bit integer in EAX.
mov(eax,ecx); // Move the second value into ECX.
xor(eax,eax); // Clear EAX of any data.
pop(eax); // Get first value off stack and back into EAX.
/////////////////////////////////////////////////////////////////////////////////////////////////
if(bx = '*') then // Check if the operator was for multiplication.
stdout.puti32(eax); // Print out the first value.
stdout.put("*"); // Print out symbol for multiplication.
stdout.puti32(ecx); // Print out the second value.
stdout.put("="); // Print out the equal sign.
mul(ecx); // Do the multiplication. (EAX * ECX)
stdout.puti32(eax); // Print out the product.
endif;
/////////////////////////////////////////////////////////////////////////////////////////////////
if(bx = '/') then // Check if the operator was for division. To Do: Fix integer overflow error.
div(cl,ax); // Do the division. (AX / CL)
stdout.puti8(al); // Print out the quotient.
if(ah != 0) then // Check if AH contains anything.
stdout.put('.'); // Print out the decimal.
stdout.puti8(ah); // Print out the remainder.
endif;
endif;
/////////////////////////////////////////////////////////////////////////////////////////////////
if(bx = '+') then // Check if the operator was for addition.
add(ecx, eax); // Do the addition. (ECX + EAX)
stdout.puti32(eax); // Print out the sum.
endif;
/////////////////////////////////////////////////////////////////////////////////////////////////
if(bx = '-') then // Check if the operator was for subtraction.
sub(ecx,eax); // Do the subtraction. (ECX - EAX)
stdout.puti32(eax); // Print out the difference.
endif;
/////////////////////////////////////////////////////////////////////////////////////////////////
if(bx = '^') then // To Do
// To Do
endif;
/////////////////////////////////////////////////////////////////////////////////////////////////
LoopCheck:
stdin.readLn(); // Let the user give their input.
stdin.getc(); // Store a character in AX.
if(ax = 'c') then // Check if the character was 'c'.
jmp(LabelPointer); // Jump back to the beginning and run the program again.
endif;
end ConCalculator;Here's a small console calculator I've been working on. Nothing big, just though I'd share it. Still have to fix a lot of things and add support for multiple operations. (Also, yes, I comment everything. No matter how trivial it may be. ;))
- Steve