revprint, C (gcc) - rextester

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//gcc 4.9.
#include <alloca.h>3

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define strlen(s) ( (s==NULL) ? 0 : strlen(s) )
#define MUTABLE(s) \
char _tmp_##s[strlen(s) + 1]; strcpy(_tmp_##s, s); s = _tmp_##s;
#define DUP(t, s) char t[strlen(s) + 1]; strcpy(t, s);
//#define DUP(fn, s) strcpy(fn(strlen(s) + 1), s)
//#define ALT(fn, s) s = DUP(fn, s)
char *s[] = {
"---------- Ice and Fire ------------",
"                                    ",
"fire, in end will world the say Some",
"ice. in say Some                    ",
"desire of tasted I've what From     ",
"fire. favor who those with hold I   ",
"                                    ",
"... elided paragraph last ...       ",
"                                    ",
"Frost Robert -----------------------",
NULL };
void revprint (char *s, int max_tokens) {
    char *result, *result_array[max_tokens];
    MUTABLE (s);
    /* tokenize */
    int results = 0;
    for (result=strtok(s," "); result; result=strtok(NULL," ")) {
        result_array[results++] = result;
        if (results >= max_tokens) break;
    }    /* reverse */
    for (;results--;) {
        printf ("%s ", result_array[results]);
    } puts ("");
} int main (void) {
    int line=0;
    for ( ; s[line]; line++) {
        revprint (s[line], 15);
    }
    return 0;
}

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Compilation time: 0.12 sec, absolute running time: 0.14 sec, cpu time: 0 sec, memory peak: 3 Mb, absolute service time: 0,35 sec