Convierte
un número de una base a otra, por ejemplo de binario (base 2) a decimal (base
10). Permite cualquier combinación.
#define TEST
#include
<stdlib.h>
#ifdef TEST
#include <stdio.h>
#endif
/*
** Calling parameters: 1 - Number string to be
converted
** 2 - Buffer for the converted output
** 3 - Radix (base) of the
input
** 4 - Radix of the output
**
** Returns: Pointer to converted output
*/
char
*base_convert(const char *in, char *out, int rin, int rout)
{
long n;
char *dummy;
n = strtol(in, &dummy, rin);
return itoa(n, out, rout);
}
#ifdef TEST
int main(int
argc, char *argv[])
{
int rin, rout;
char buf[40];
if (4 > argc)
{
puts("Usage: BASCNVRT
<number> <base_in> <base_out>");
return(-1);
}
rin
= atoi(argv[2]);
rout = atoi(argv[3]);
printf("%s (base %d) = %s (base
%d)n", argv[1], rin,
base_convert((const char *)argv[1],
buf, rin, rout), rout);
return 0;
}
#endif
