Count Characters

Code

#include <u.h>
#include <libc.h>
#include <bio.h>

#define STDIN   0

/* count characters in input; second version */

void
main()
{
    Biobuf *bstdin;
    bstdin = Bfdopen(STDIN, OREAD); 
    float nc;

    for (nc = 0; Bgetc(bstdin) >= 0; ++nc)
        ;
    print("%.0f\n", nc);

    exits(0);
}

Output

$ 9c chars.c; 9l chars.o -o chars
$ ./chars 
How many characters are here?
30