Lex program to Count the Positive numbers, Negative numbers and Fractions
Problem : Write a Lex program to count the positive numbers, negative numbers and fractions
FLEX (Fast Lexical Analyzer Generator) is a tool/computer program for generating lexical analyzers (scanners or lexers) written by Vern Paxson in C around 1987. Lex reads an input stream specifying the lexical analyzer and outputs source code implementing the lexer in the C programming language. The function yylex() is the main flex function which runs the Rule Section.
Prerequisite: Flex (Fast lexical Analyzer Generator)
Input: 2 -8 -2.5 8.5 Output: No. of positive numbers: 1 No. of Negative numbers: 1 No. of Positive numbers in fractions: 1 No. of Negative numbers in fractions: 1 Input: 1 2 3 -4 -5 6.5 7.5 Output: No. of positive numbers: 3 No. of Negative numbers: 2 No. of Positive numbers in fractions: 2 No. of Negative numbers in fractions: 0