getarg_.c

来自「在Linxu程序设计当中」· C语言 代码 · 共 35 行

#include "f2c.h"
#ifdef __cplusplus
extern "C" {
#endif

/*
 * subroutine getarg(k, c)
 * returns the kth unix command argument in fortran character
 * variable argument c
*/

#ifdef KR_headers
VOID getarg_(n, s, ls) ftnint *n; register char *s; ftnlen ls;
#else
void getarg_(ftnint *n, register char *s, ftnlen ls)
#endif
{
extern int xargc;
extern char **xargv;
register char *t;
register int i;

if(*n>=0 && *n<xargc)
	t = xargv[*n];
else
	t = "";
for(i = 0; i<ls && *t!='\0' ; ++i)
	*s++ = *t++;
for( ; i<ls ; ++i)
	*s++ = ' ';
}
#ifdef __cplusplus
}
#endif