From 20abb9af687fd7b7e8c3f71e0f4f28bc8ec028c1 Mon Sep 17 00:00:00 2001
From: sumuel <samuel@yakubos.org>
Date: Tue, 15 Sep 2026 18:56:49 +0000
Subject: add verbose flag

---
 Makefile | 14 +++++++-------
 main.c   | 45 ++++++++++++++++++++++++++++++++++-----------
 2 files changed, 41 insertions(+), 18 deletions(-)

diff --git a/Makefile b/Makefile
index 3b15937..6134562 100755
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,3 @@
-#clear ; vim main.c ; gcc main.c -Wall -Wextra -Wpedantic -std=c99 -o collatz
-
 PREFIX = /usr/local
 
 CFLAGS   = -std=c99 -pedantic -Wall -Wno-deprecated-declarations -O3
@@ -8,17 +6,19 @@ CC = cc
 
 SRC = main.c
 
+TARGET = collatz
+
 all:
-	${CC} ${CFLAGS} ${SRC} -o  collatz
+	${CC} ${CFLAGS} ${SRC} -o ${TARGET}
 
 .PHONY: all clean dist install uninstall
 
 install: all
-	${CC} ${CFLAGS} ${SRC} -o  collats
-	cp -f collatz ${PREFIX}/bin
-	chmod 755 ${DESTDIR}${PREFIX}/bin/collatz
+	${CC} ${CFLAGS} ${SRC} -o  ${TARGET}
+	cp -f ${TARGET} ${PREFIX}/bin
+	chmod 755 ${DESTDIR}${PREFIX}/bin/${TARGET}
 
 uninstall:
-	rm -f ${PREFIX}/bin/collatz
+	rm -f ${PREFIX}/bin/${TARGET}
 
 
diff --git a/main.c b/main.c
index fd35397..f3a375a 100644
--- a/main.c
+++ b/main.c
@@ -1,32 +1,55 @@
 #include <stdio.h>
 #include <stdlib.h>
+#include <stdbool.h>
+
+size_t collatz(size_t long_num) {
+    return ( long_num & 1 ) ? ((long_num << 1) + long_num ) + 1 : long_num >> 1;
+}
+
+size_t printer(size_t long_num, bool verbose) {
+    size_t  steps = 0;
+
+    /* Probably not the best way to do this */
+    switch (verbose) {
+        case true:
+            while ( long_num > 1 ) {
+            long_num = collatz(long_num);
+            printf("%ld\n", long_num);
+            steps++;
+            }
+            break;
+        case false:
+            while ( long_num > 1 ) {
+            long_num = collatz(long_num);
+            steps++;
+            }
+    }
+
+    return steps;
+}
 
 int print_help(char *argv[]) {
-    fprintf(stderr,"Usage: %s <number>"
+    fprintf(stderr,"Usage: %s <number> [-v]"
            "\nMade by samuel@yakubos.org\n\n", argv[0]);
     return 1;
 }
 
 int main(int argc, char *argv[]) {
-    if ( argc != 2 ) return print_help(argv);
+    if ( argc < 2 || argc > 3 ) return print_help(argv);
 
+    bool verbose = false;
     char *endptr;
     long  int_number = strtol(argv[1], &endptr, 10);
 
     /* check the number for nonsense */
     if ( int_number <= 0 ) return print_help(argv);
     if ( *endptr != '\0' ) return print_help(argv);
+    if (argc >= 3 && argv[2][1] == 'v') { verbose = true; }
+    
 
-    unsigned long long long_num = int_number;
-
-    int  steps = 0;
-    while ( long_num > 1 ) {
-        long_num = ( long_num & 1 ) ? long_num * 3 + 1 : long_num / 2;
-        printf("%llu\n", long_num);
-        steps++;
-    }
+    size_t long_num = int_number;
 
-    printf("%s took %d steps\n", argv[1], steps);
+    printf("%s took %ld steps\n", argv[1], printer(long_num, verbose));
     return 0;
 }
 
-- 
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