Lexical? Simple Compiler for my Project

can anyone help me with my School project..since

My Teacher told me to make a simple basic compiler that has lexical analysis features


so it means onc you type an expression on a textbox..and verify that line

it will separate Identifier,operator,assignment operator and number


so lets say you type sum=a+b

then on the ListBox it will show

sum is an identifier
= is an Assignment Operator
a is an identifier
+ is an Operator
b is an identifier


just like that and if i inputted sum = 1 + 2 then it will show

sum is an identifier
= is an Assignment Operator
1 is a number
+ is an Operator
2 is a number

after that on the second listbox it will show

Sum = 3 (since 1+2 is inputted on the textbox)



I hope someone could help me and provide the easiest code as possible

Noone here will do your homework for you. A quick look around the forums will show you that. But if you get started, and then run into problems, you can post your code in the relevant forum and you are pretty much guaranteed help by the many qualified people here.

BUT DON'T ASK US TO DO YOUR HOMEWORK.

Quote:

---

Originally Posted by leiza11

can anyone help me with my School project..since

My Teacher told me to make a simple basic compiler that has lexical analysis features


so it means onc you type an expression on a textbox..and verify that line

it will separate Identifier,operator,assignment operator and number


so lets say you type sum=a+b

then on the ListBox it will show

sum is an identifier
= is an Assignment Operator
a is an identifier
+ is an Operator
b is an identifier


just like that and if i inputted sum = 1 + 2 then it will show

sum is an identifier
= is an Assignment Operator
1 is a number
+ is an Operator
2 is a number

after that on the second listbox it will show

Sum = 3 (since 1+2 is inputted on the textbox)



I hope someone could help me and provide the easiest code as possible

---

first o must separate the things... how!?! well you can try this way:
you can do a loop, in these loop you must see the letters(and simbols) is like you have a string and you shearch the words(you can do these by using mid, left and right string functions(or one of them).... for you see the type of a varible(i don't have sure) but use the typename function...
i hope that i give some lights

Quote:

---

Originally Posted by leiza11

can anyone help me with my School project..since

My Teacher told me to make a simple basic compiler that has lexical analysis features


so it means onc you type an expression on a textbox..and verify that line

it will separate Identifier,operator,assignment operator and number


so lets say you type sum=a+b

then on the ListBox it will show

sum is an identifier
= is an Assignment Operator
a is an identifier
+ is an Operator
b is an identifier


just like that and if i inputted sum = 1 + 2 then it will show

sum is an identifier
= is an Assignment Operator
1 is a number
+ is an Operator
2 is a number

after that on the second listbox it will show

Sum = 3 (since 1+2 is inputted on the textbox)



I hope someone could help me and provide the easiest code as possible

---

you can shearch caracter after caracter(like using left string function, for example)... using these you can separate the things....
i hope these words give you some lights