Remade because I kinda deleted the old, perfect version

2 files changed, 53 insertions, 0 deletions

diff --git a/Makefile b/Makefile
new file mode 100755
index 0000000..9f1cea8
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,24 @@
+#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 -Os
+
+CC = gcc
+
+SRC = main.c
+
+all:
+	${CC} ${CFLAGS} ${SRC} -o  collatz
+
+.PHONY: all clean dist install uninstall
+
+install: all
+	${CC} ${CFLAGS} ${SRC} -o  stats
+	cp -f stats ${PREFIX}/bin
+	chmod 755 ${DESTDIR}${PREFIX}/bin/stats
+
+uninstall:
+	rm -f ${PREFIX}/bin/stats
+
+
diff --git a/main.c b/main.c
new file mode 100644
index 0000000..7e289a3
--- /dev/null
+++ b/main.c
@@ -0,0 +1,29 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+void PrintHelp(void) {
+    printf("Usage: collatz <number>"
+           "\nMade by samuel@yakubos.org\n\n");
+}
+
+int main(int argc, char *argv[]) {
+    if ( argc < 2 || argc > 2) {
+        PrintHelp();
+        return 1;
+    }
+    char *endptr;
+    long int num;
+    int  steps = 0;
+    num = strtol(argv[1], &endptr, 10);
+
+    printf("%li\n", num);
+    while ( num > 1 ) {
+        num = ( num & 1 ) ? num * 3 + 1 : num / 2;
+        printf("%li\n", num);
+        steps++;
+    }
+
+    printf("%s took %d steps\n", argv[1], steps);
+    
+}
+