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#include <unistd.h> // read, write
#include <fcntl.h> // open, close, O_RDONLY
#include <stdio.h> // printf, perror
int isBlank(char c) {
return c == ' ' || c == '\n' || c == '\t';
}
// print line, word and byte count
int main(int argc, char* argv[]) {
int f = open(argv[1], O_RDONLY);
if (f < 0) {
perror("open");
return 1;
}
int lines = 0, words = 0, bytes = 0;
char buf;
int lastWasBlank = 0;
while (read(f, &buf, 1)) {
bytes++;
if (buf == '\n') lines++;
if (isBlank(buf)) {
words += !lastWasBlank;
lastWasBlank = 1;
}
else lastWasBlank = 0;
}
close(f);
printf("%d %d %d %s\n", lines, words, bytes, argv[1]);
}
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