Lex program to identify integer, float and exponential value

%{

#include<stdio.h>

%}

%%

[0-9]+ printf("Integer");

[0-9]+\.[0-9]+ printf("Float");

[0-9]+E[?\-0-9][0-9]* printf("Exponential");

[?\-0-9][0-9]*?.[0-9]+E[?\-0-9][0-9]* printf("Exponential");

.* printf("Other");

%%

int yywrap(void)

{

return 1;

}

int main()

{

yylex();

return 0;

}

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