added istr to std

examples/guessing.sloth

@@ -3,13 +3,15 @@ foreign fn println();
 foreign fn readln() String;
 foreign fn random(min: Int, max: Int) Int;
 foreign fn parse_int(str: String) Int;
+foreign fn randGen(min: Int, max: Int) Int;
+foreign fn istr(x: Int) String;
 
-fn main() {
-	var computer: Int = random(1, 10);
+fn main() Int {
+	var computer: Int = randGen(1, 10);
 	var tries: Int = 0;
 	var correct: Bool = false;
 
-	while !correct {
+	while correct == false {
 		print("Pick a number between 1 and 10: ");
 		var human: Int = parse_int(readln());
 
@@ -25,5 +27,9 @@ fn main() {
 		tries = tries + 1;
 	}
 
-	println("It took you ", tries, " tries to guess correctly!");
+	print("It took you ");
+	print(istr(tries));
+	println(" to guess correctly!");
+
+	return 0;
 }

std/stdlib.c

@@ -2,6 +2,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <time.h>
+#include <stdio.h>
 
 int wait(int msec) {
     struct timespec ts;
@@ -39,7 +40,9 @@ int as_int(float x) {
     return (int) x;
 }
 
-// char* istr(int x) {
-//     char snum[100];
-//     return (char* )itoa(x, snum, 10);
-// }
+char* istr(int x) {
+    char* snum[100];
+    sprintf(snum, "%d", x);
+    //char* result = snum;
+    return snum;
+}

std/stdlib.sloth

@@ -5,6 +5,6 @@ foreign fn slen(str: String) Int;
 foreign fn parse_int(str: String) Int;
 foreign fn termpos(x: Int, y: Int);
 foreign fn as_int(x: Float) Int;
-#foreign fn istr(x: Int) Int;
+foreign fn istr(x: Int) String;
 
 foreign fn termclear() Void;