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#include <stdio.h>
#include <stdbool.h>
#include <string.h>
#include <assert.h>
#define N 101
#define MAX_CHAR 256
void do_ieee754 (void) {
double a = 0.0;
double b = 1.0;
double c;
for (int i = 0; i < N; i += 1) {
c = a + b;
printf("%.0lf\n", c);
b = a;
a = c;
}
}
void add (char *out, const char *a, const char *b) {
int i;
int n;
int carry = 0;
bool flag;
for (i = 0; i < MAX_CHAR - 1; i += 1) {
n = carry;
flag = false;
if (a[i] != 0) {
n += a[i] - '0';
flag = true;
}
if (b[i] != 0) {
n += b[i] - '0';
flag = true;
}
carry = n / 10;
if (!flag && carry == 0 && n == 0) {
out[i] = 0;
return;
}
out[i] = (n % 10) + '0';
}
assert(carry == 0); // detect "overflow"
}
void print_reversed (const char *s) {
const size_t l = strlen(s);
const char *p = s + l;
for (size_t i = 0; i < l; i += 1) {
p -= 1;
putchar(*p);
}
putchar('\n');
}
void do_crude_mp (void) {
static char a[MAX_CHAR];
static char b[MAX_CHAR];
static char c[MAX_CHAR];
strcpy(a, "0");
strcpy(b, "1");
memset(c, 0, MAX_CHAR);
for (int i = 0; i < N; i += 1) {
add(c, a, b); // c = a + b;
print_reversed(c);
memcpy(b, a, MAX_CHAR); // b = a;
memcpy(a, c, MAX_CHAR); // a = c;
}
}
bool parse_flag (const char *s) {
if (strcmp(s, "true") == 0) {
return true;
}
else if (strcmp(s, "false") == 0) {
return false;
}
else {
double tmp = 0.0;
sscanf(s, "%lf", &tmp);
return tmp != 0.0;
}
}
int main (const int argc, const char **argv) {
if (argc == 1 || (argc > 1 && parse_flag(argv[1]))) {
do_crude_mp();
}
else {
do_ieee754();
}
return 0;
}
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