From 0bebb5b18e1c04f12558ddef68c90ed688436a5a Mon Sep 17 00:00:00 2001
From: sijanec <sijanecantonluka@gmail.com>
Date: Sat, 5 Dec 2020 00:35:42 +0100
Subject: 12. naloga

---
 mat/euler/11/meme.txt |   6 ++++++
 mat/euler/12/Makefile |   2 ++
 mat/euler/12/a.out    | Bin 0 -> 8568 bytes
 mat/euler/12/prog.c   |  33 +++++++++++++++++++++++++++++++++
 4 files changed, 41 insertions(+)
 create mode 100644 mat/euler/11/meme.txt
 create mode 100644 mat/euler/12/Makefile
 create mode 100755 mat/euler/12/a.out
 create mode 100644 mat/euler/12/prog.c

diff --git a/mat/euler/11/meme.txt b/mat/euler/11/meme.txt
new file mode 100644
index 0000000..4886035
--- /dev/null
+++ b/mat/euler/11/meme.txt
@@ -0,0 +1,6 @@
+
+
+
+	Her:	I only date bad boys.
+	Me:		I don't check whether
+				malloc() failed or not!
diff --git a/mat/euler/12/Makefile b/mat/euler/12/Makefile
new file mode 100644
index 0000000..156bc0d
--- /dev/null
+++ b/mat/euler/12/Makefile
@@ -0,0 +1,2 @@
+default:
+	gcc prog.c -lm
diff --git a/mat/euler/12/a.out b/mat/euler/12/a.out
new file mode 100755
index 0000000..37a4114
Binary files /dev/null and b/mat/euler/12/a.out differ
diff --git a/mat/euler/12/prog.c b/mat/euler/12/prog.c
new file mode 100644
index 0000000..7af0f37
--- /dev/null
+++ b/mat/euler/12/prog.c
@@ -0,0 +1,33 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+int main (int argc, char ** argv) {
+	if (argc != 1 + 1) {
+		fprintf(stderr, "uporaba: %s <stevilka>, \nprimer: %s 500\n", argv[0], argv[0]);
+		return 1;
+	}
+	unsigned long int n = strtol(argv[1], NULL, 10);
+	unsigned long long int i = 1;
+	unsigned long long int j = 0;
+	unsigned long long int d = 0;
+	unsigned long long int s = 0; // dejansko trikotniško število.
+	while (1) {
+		s = s+i;
+		fprintf(stderr, "\rpreizkušam število %lld ...", i);
+		d = 0;
+		for (j = 2; j < ceill(sqrtl(s)); j++) {
+			if (s % j == 0)
+				d++;
+		}
+		d = (d*2)+2; // dva dodamo, ker sta to število samo in 1
+		if (d > n) {
+			fprintf(stdout, "\rnašel število %lld z %lld delitelji\n", s, d);
+			return 0;
+		}
+		i++;
+		if (i <= 1) // int rollover
+			break;
+	}
+	fprintf(stderr, "napaka. intager rollover pred najdenim rezultatom!\n");
+	return 2;
+}
-- 
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