15 April 2017

K&R C

No special instructions.

ANSI C

Compile with -D_ANSI (or /D "_ANSI" for MS-DOS style platforms).

AOS/VS

Compile with _XCALLOC/DEFINE.

BTOS C

Compile with -I<BTOSC> -D_XCALLOC -D_ANSI.

For n=10000, the large memory model is required. Add -ml to the compiler options and link accordingly.

IBM ILE C for AS/400

Use stdlib.h instead of malloc.h and compile with DEFINE('_ANSI').

Depending on your terminal keyboard, you may need to use the trigraphs ??( and ??) in place of square brackets.

Coherent 3.2
Rhapsody 5.x
Mac OS X 10.0–10.3

Compile with -I/usr/include/sys.

Manx Aztec C65

No long type: change format %lu to %u and all instances of long to int. Compile with -D_XCALLOC.

MetaWare High C for BTOS/CTOS

Compile with parameters -define _XCALLOC,_ANSI.

Minix 1.0 or 1.1 for IBM PC & XT

Create malloc.h with the following contents, then compile with -I. -D_V7.

/* calloc() */
char* calloc(n, siz)
int n; int siz;
{
	int i; char *p;
	p=(char*)malloc(n*siz);
	for(i=0; i<n*siz; i++) {
		p[i]=0;
	}

	return(p);
}

Note: Minix 1.1 for Atari ST is based on Minix 1.3 code. See below for ST Minix.

Minix 1.2 for IBM PC, XT, or AT

Compile with -D_V7 -D_XCALLOC.

Minix 1.1 for Atari ST
Minix 1.3 for IBM PC, XT, or AT

Compile with -D_XCALLOC.

NEXTSTEP

Compile with -I/usr/include/bsd/sys.

U Waterloo SDG C2C for MS-DOS

Compile with D=_XCALLOC.

UTek W2.3 for Tektronix 6100

#include <sys/types.h> and use sys/systm.h instead of malloc.h.

VMS

Compile with /DEFINE=(_ANSI,_XCALLOC).

Gould G-NIX
SunOS 1.x & 2.x
MetroWerks C/C++ for BeOS 1.1d5 & 1.1d6
SCO Xenix SDS [ Lisa ]
Manx Aztec C 68k [ Amiga ]
IBM PC/IX 1.0 SDS [ IBM XT ]
IBM Xenix 1.0 SDS [ IBM AT ]
MetaWare High C [ IBM AOS ]
Mark Williams C [ Atari ST ]
Logical Systems C [ Transputer ]
Perihelion Helios C [ Transputer ]
Norcroft RISC OS ARM C [ Archimedes ]

Compile with -D_XCALLOC.

/* n primes */

#include <stdio.h>
#ifndef _XCALLOC
#include <malloc.h>
#else
extern char* calloc();
#endif

#ifndef _V7
#define FORMAT "%lu\n"
#else
#define FORMAT "%D\n"
#endif

#ifdef _ANSI
unsigned int patoi(char *str) {
#else
unsigned int patoi(str)
char *str;
{
#endif
	int i; unsigned int res;
	i=0; res=0;

	while(str[i] != 0) {
		res=((res*10) + (str[i]-'0'));
		i++;
	}

	return(res);
}

#ifdef _ANSI
int isprime(unsigned long n, unsigned long *primes) {
#else
int isprime(n, primes)
unsigned long n; unsigned long *primes;
{
#endif
	int i; i=0;

	while(primes[i] > 0) {
		if(n % primes[i] == 0) {
			return(0);
		}
		i++;
	}

	return(1);
}

#ifdef _ANSI
int main(int argc, char *argv[]) {
#else
int main(argc, argv)
int argc; char **argv;
{
#endif
	unsigned int found, n;
	unsigned long count, *primes;

	found=0; count=2;
	n=patoi(argv[1]);
	primes=(unsigned long*)calloc(n, sizeof(long));

	while(found < n) {
		if(isprime(count, primes)) {
			primes[found] = count;
			printf(FORMAT, count);
			found++;
		}
		count++;
	}

	return(0);
}