Given a text file $$input$.$txt$,$ write a program to identify all the lexemes from the file $$input$.$txt$$ and write the lexemes separated by a single space into the file $$output$.$txt$.$ Please keep in mind that all comment lines $($lines that begin with $//),$ blank lines and extra white spaces are not included in the file $$output$.$txt$.$ Do not forget to place one space before and space after each lexeme. Note that the cin$>>$ is one lexeme. Save it as Prog$2$ and upload it on Canvas.

input.txt:

$//$declare variables

int num$1,$ nume$2,$ num$3,$t ;

$//$initialize variables

num$1=13$; num$2=55$ ;

num$3=17$ ;

cin$>>$ t ;

$//$compute and display their total

t$=$ num$1*$ num$2-$t; $//$compute new value for t

num$1=$ num$1+$t; $//$compute new value for num$1$

Sample output.txt:

int num$1,$ nume$2,$ num$3,$ t;

num$1=13$;

num$2=55$;

num$3=17$;

cin$>>$t;

t$=$ num$1*$num$2+$num$3-$t;

num$1=$num$1+$t;