Thou shalt have no other gods before the ANSI C standard 1401

Hank Oredson

A slight modification of this should do it (it needs to open the output file after finishing the input reading). You will need ggets.c, which is available at:

* File freverse.c - testing ggets *

#include "ggets.h"

typedef struct node { struct node *next; char *ln; } node, *nodeptr;

* ======================= *-* reverse string in place *-* return length of string *sizet revstring(char *stg) { char *last, temp; sizet lgh;

lgh = strlen(stg); last = stg + lgh; * points to '-0' * temp = *stg; *stg++ = *last; *last = temp; } } return lgh; }* revstring *

* ======================= *-* reverse file *int main(void) { char *line; nodeptr root, temp; int lncount, chcount;

fprintf(stderr, "Reversing stdin to stdout-n"); root = NULL; lncount = chcount = 0; while (0 == ggets(&line)) { if (NULL == (temp = malloc(sizeof *temp))) { fprintf(stderr, "Out of memory-n"); return EXITFAILURE; } chcount += revstring(line); lncount++; root = temp; }

while (root) { temp = root; free(temp); } fprintf(stderr, "%d chars in %d lines-n", chcount, lncount); return 0; }* main *-* END freverse.c - testing ggets *

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