System programming

LAB FILE

AMITY SCHOOL OF ENGINEERING

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TECHNOLOGY

SUBMITTED TO:SUBMITTED BY:

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INDEX

S.No.

Date

Assignment

Remarks

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Practical-1

AIM: WAP to create a Lexical Analyzer to count number of identifiers, constants and operators in a given expression.

CODE:

#include #include #include #include

#define ope(x)(x=='+'||x=='-'||x=='*'||x=='/'||x=='%'||x=='='||x=='^'||x==')'||x=='(')

#define alp(x) ((str[i]>='a'&&str[i]='A'&&str[i]='0'&&str[i]