bunch of changes

examples/fib.c

@@ -0,0 +1,33 @@
+#include <stdio.h>
+#include <errno.h>
+#include <limits.h>
+#include <stdlib.h>
+
+int n = 35;
+
+int fib(int x) {
+    if (x < 2) {
+      return x;
+    }
+    return fib(x - 1) + fib(x - 2);
+}
+
+int main(int argc, char *argv[]) {
+    if (argc > 1) {
+        char*p;
+
+        errno = 0;
+        long conv = strtol(argv[1], &p, 10);
+
+        // Check for errors: e.g., the string does not represent an integer
+        // or the integer is larger than int
+        if (errno != 0 || *p != '\0' || conv > INT_MAX || conv < INT_MIN) {
+            printf("invalid argument: %s\n", p);
+            exit(1);
+        }
+
+        n = conv;
+    }
+
+    printf("%d\n", fib(n));
+}

examples/fib.go

@@ -0,0 +1,25 @@
+//go:build ignore
+
+package main
+
+import (
+	"fmt"
+	"os"
+	"strconv"
+)
+
+func fib(x int) int {
+	if x < 2 {
+		return x
+	}
+	return fib(x-1) + fib(x-2)
+}
+
+var n = 35
+
+func main() {
+	if len(os.Args) > 2 {
+		n, _ = strconv.Atoi(os.Args[1])
+	}
+	fmt.Println(fib(n))
+}

examples/fib.monkey

@@ -7,7 +7,7 @@ fib := fn(x) {
 
 N := 35
 
-if (len(args()) == 1) {
+if (len(args()) > 0) {
   N = int(args()[0])
 }
 

examples/fib.py

@@ -0,0 +1,22 @@
+#!/usr/bin/env python3
+
+import sys
+print(sys.argv)
+
+n = 35
+
+def fib(x):
+    if (x < 2):
+        return x
+    return fib(x-1) + fib(x-2)
+
+def main():
+    global n
+    
+    if len(sys.argv) > 1:
+        n = int(sys.argv[1])
+
+    print("{}\n".format(fib(n)))
+
+if __name__ == "__main__":
+    main()

examples/fib.tau

@@ -0,0 +1,10 @@
+#!/usr/bin/env tau
+
+fib = fn(n) {
+	if n < 2 {
+		return n
+	}
+	fib(n-1) + fib(n-2)
+}
+
+println(fib(35))