#include <stdio.h>

int detab(char s[],int lim, int col)
/*s is the string we need to replace, lim is the character limit
 * and col is the size of a tab (8 characters usually so we use that)*/
{
  int c, i; /*c is the character i0nteger representation and i is the column we are on*/
  for (i=0; i < lim-1 && (c=getchar())!=EOF && c!='\n';)
    if (c == '\t') {
      int sp=col-i%col; /*Amount of spaces to replace the tab with*/
      int st=i; /*Starting point*/
      for (int co = 0; co<=sp && i < lim-1; co++ && i++) {
        /*For each space we need to add, we increase the column count and add it
         *to the array at position (starting point + spaces added so far)
         * and we increase the spaces added so far*/
        s[st+co] = ' ';
      }
    } else {
      s[i] = c;
      ++i;
    }
  if (c == '\n')
    /*If it is the end of the string, represented by a new line,
     * add that new line and increase it for the \0 addition*/ {
    s[i] = c;
  }
  /*Add the string end and return it to the previous context*/
  s[i+1] = '\0';
  return i;
}