c/wc.c


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#include "gbos.h"
/* wc: count lines, words, chars of stdin (like `wc`). */
void main(void) {
    unsigned int lines = 0, words = 0, chars = 0;
    unsigned char inword = 0;
    char c;
    for (;;) {
        c = readc();
        if (c == EOF) break;
        chars++;
        if (c == '\n') lines++;
        if (c == ' ' || c == '\n' || c == '\r' || c == '\t') {
            inword = 0;
        } else if (!inword) {
            inword = 1;
            words++;
        }
    }
    putu(lines); putc(' '); putu(words); putc(' '); putu(chars); nl();
}