cat.c

ITT: make your best, most elegant implementation of cat(1) in C. Doesn't have to be POSIX compliant; for example, mine takes no option arguments because that's how I think it should be, whereas I think that POSIX specifies a few options.

#include <stdio.h>
int main(int argc, char **argv) {
    char b[4096];
    FILE *f = stdin;
    int i;
    size_t s;
    if (argc == 1)
        goto noargs;
    for (i = 1; i < argc; i++) {
        f = fopen(argv[i], "rb");
        if (!f) {
            fprintf(stderr, "%s: failed to open %s\n", argv[0], argv[i]);
            continue;
        }
        noargs:
        while ((s = fread(b, 1, 4096, f)))
            fwrite(b, 1, s, stdout);
    }
    return 0;
}

Why is this the best in my opinion? It is short, simple, fast, serves just the purpose of concatenating files and no more, and even has a clever and elegant trick to handle the special case of no arguments without code duplication.

>>38
the probability is exactly zero.
Read the definition of the term in >>36.  Its probability is zero, but it CAN happen, the same way P(x = sqrt(2)) = 0 but it obviously can occur.