Nov 21, 2011

K & R C Programs Exercise 1-20.

K and R C, Solution to Exercise 1-20:
C Program to replace the tabs by proper number of blanks. K and R C Programs Exercises provides the solution to all the exercises in the C Programming Language, second addition, by Brian W.Keringhan and Dennis M.Ritchie(Prentice Hall,1988). You can learn and solve K&R C Programs Exercise. Read more about C Programming Language .

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#include "stdio.h"
#define TABSIZE 6   /*Tab increment size*/
main()
{
 int c, no_blanks,pos;
 no_blanks = 0;   /*number of blamks required*/
 pos = 1;         /* position of the character*/
 while((c=getchar()) != EOF){
  if(c == '\t'){
   no_blanks = TABSIZE-(pos-1)%TABSIZE;
   while(no_blanks>0){

    putchar(' ');
    ++pos;
    --no_blanks;
   }
   else if(c == '\n'){
    putchar(c);
    pos = 1;
   } else {
    putchar(c);
    ++pos;
   }
  }
 }
}

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