googlerese.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#ifdef __cilk
#include <cilk/cilk.h>
#else
#define cilk_spawn
#endif

#define readline(buf) do {                                             \
		int j, c;                                              \
		for(j = 0; (c = getchar()) != '\n' && c != EOF; ++j) { \
			buf[j] = c;                                    \
		}                                                      \
		buf[j] = '\0';                                         \
	} while(0)

#define readinput(input, output, n, limit, ofactor) do {                             \
		char buf[8];                                                         \
		int i;                                                               \
		readline(buf);                                                       \
		n = atoi(buf);                                                       \
		input = (char **)emalloc(n * sizeof(char *));                        \
		output = (char **)emalloc(n * sizeof(char *));                       \
		for(i = 0; i < n; ++i) {                                             \
			input[i] = (char *)emalloc(limit * sizeof(char));            \
			readline(input[i]);                                          \
			output[i] = (char *)emalloc(ofactor * limit * sizeof(char)); \
			output[i][0] = '\0';                                         \
		}                                                                    \
	} while(0)

void *
emalloc(size_t s)
{
	void *v;
	v = malloc(s);
	if(v == NULL) {
		printf("Out of memory.\n");
		exit(1);
	}
	return v;
}

void
free_streams(char **input, char **output, int n)
{
	int i;
	for(i = 0; i < n; ++i) {
		free(input[i]);
		free(output[i]);
	}
	free(input);
	free(output);
}

char letters[26] = {
	'y', 'h', 'e', 's', 'o', 'c', 'v', 'x', 'd', 'u', 'i', 'g', 'l',
	'b', 'k', 'r', 'z', 't', 'n', 'w', 'j', 'p', 'f', 'm', 'a', 'q',
};

void
translate_line(char *iline, char *oline)
{
	int i, length;
	length = strlen(iline);
	for(i = 0; i < length; ++i) {
		if(iline[i] == ' ') {
			oline[i] = iline[i];
		} else {
			oline[i] = letters[iline[i] - 'a'];
		}
	}
	oline[i] = '\0';
}

void
translate(char **input, char **output, int n)
{
	int i;
	for(i = 0; i < n; ++i) {
		cilk_spawn translate_line(input[i], output[i]);
	}
}

int
main(void)
{
	char **input, **output;
	int i, n;
	readinput(input, output, n, 100, 1);
	translate(input, output, n);
	for(i = 0; i < n; ++i) {
		printf("Case #%d: %s\n", i+1, output[i]);
	}
	free_streams(input, output, n);
	return 0;
}