wc is now working.

od/main.go

@@ -33,7 +33,6 @@ func parse_opts() (Opts) {
 
   if flag.NArg() == 0 {
     log.Fatal("USAGE: od [files]")
-    os.Exit(1)
   }
 
   if opts.Hex {

wc/.gitignore

@@ -0,0 +1,2 @@
+wc.exe
+wc

wc/Makefile

@@ -0,0 +1,4 @@
+
+
+build:
+	go build .

wc/go.mod

@@ -0,0 +1,3 @@
+module MY/wc
+
+go 1.24.2

wc/main.go

@@ -0,0 +1,113 @@
+package main
+
+import (
+  "fmt"
+  "os"
+  "log"
+  "flag"
+  "bufio"
+  "strings"
+  "unicode/utf8"
+)
+
+type Opts struct {
+  Bytes bool
+  Chars bool
+  Words bool
+  Lines bool
+}
+
+type Counts struct {
+  Bytes int
+  Chars int
+  Words int
+  Lines int
+  Filename string
+}
+
+
+func parse_opts() (Opts, []string) {
+  var opts Opts
+
+  flag.BoolVar(&opts.Bytes, "c", false, "Count bytes")
+  flag.BoolVar(&opts.Chars, "m", false, "Count chars")
+  flag.BoolVar(&opts.Words, "w", false, "Count words")
+  flag.BoolVar(&opts.Lines, "l", false, "Count lines")
+
+  flag.Parse()
+
+  if flag.NArg() == 0 {
+    log.Fatal("USAGE: wc [-l] [-w] [-m] [-c] <files>")
+  }
+
+  if !opts.Bytes && !opts.Chars && !opts.Words && !opts.Lines {
+    opts.Lines = true
+  }
+
+  return opts, flag.Args()
+}
+
+
+func count_file(opts *Opts, filename string) Counts {
+  var counts Counts
+
+  in_file, err := os.Open(filename)
+  if err != nil { log.Fatal(err) }
+  defer in_file.Close()
+
+  scan := bufio.NewScanner(in_file)
+  for scan.Scan() {
+    line := scan.Text()
+
+    if opts.Lines {
+      counts.Lines++
+    }
+
+    if opts.Words {
+      counts.Words += len(strings.Fields(line))
+    }
+
+    if opts.Chars {
+      counts.Chars += utf8.RuneCountInString(line) + 1
+    }
+
+    if opts.Bytes {
+      counts.Bytes += len(line) + 1
+    }
+  }
+
+  if scan.Err() != nil {
+    log.Fatal(scan.Err())
+  }
+
+  return counts
+}
+
+func print_count(opts *Opts, count *Counts, file string) {
+  if opts.Lines {
+    fmt.Print(count.Lines, " ")
+  }
+
+  if opts.Words {
+    fmt.Print(count.Words, " ")
+  }
+
+  if opts.Chars {
+    fmt.Print(count.Chars, " ")
+  }
+
+  if opts.Bytes {
+    fmt.Print(count.Bytes, " ")
+  }
+
+  fmt.Println(" ", file)
+}
+
+func main() {
+  opts, files := parse_opts()
+
+  for _, file := range files {
+    count := count_file(&opts, file)
+    print_count(&opts, &count, file)
+  }
+}