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
"\nNo. of positive numbers: %d"
"\nNo. of Negative numbers: %d"
"\nNo. of Positive numbers in fractions: %d"
"\nNo. of Negative numbers in fractions: %d\n"
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