Write a LEX program to collect tokens (numbers) and sort.

Code:

%{

#include<stdio.h>

int t, a[20],i,j,n,num;

%}

%%

[0-9]+ {num=0;

for(i=0;i<yyleng;i++)

num=num*10+(yytext[i]-'0');

a[n++]=num;

}

%%

main()

{

yyin=fopen("file.c","r");

yylex();

for(i=0;i<n;i++)

for(j=0;j<n-i-1;j++)

if(a[j]>a[j+1])

{

t=a[j];

a[j]=a[j+1];

a[j+1]=t;

}

for(i=0;i<n;i++)

printf("%d\n",a[i]);

}

int yywrap()

{

return 1;

}