1 files changed, 30 insertions, 0 deletions

diff --git a/mat/euler/7/prog.c b/mat/euler/7/prog.c
new file mode 100644
index 0000000..e2e31a1
--- /dev/null
+++ b/mat/euler/7/prog.c
@@ -0,0 +1,30 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+int jePrastevilo(unsigned long long int u) {
+	if (u <= 1) // nah 1 ni praštevilo js sm sam neumen
+		return 0; // in praštevila so samo naravna, spet sem neumen
+	if (u == 2)
+		return 1;
+	for (int i = 2; i <= ceil(sqrt(u)); i++)
+		if (u % i == 0)
+			return 0;
+	return 1;
+}
+int main(int argc, char ** argv) {
+	if (argc != 1+1) {
+		fprintf(stderr, "uporaba: %s <st>\nprimer, ki izpiše prvih 10001 praštevil: %s 10001", argv[0], argv[0]);
+		return 1;
+	}
+	size_t m = atoi(argv[1]);
+	size_t n = 2;
+	size_t i = 0;
+	while (i < m) {
+		if (jePrastevilo(n)) {
+			fprintf(stdout, "našel %ld.: %ld\n", i+1, n);
+			i++;
+		}
+		n++;
+	}
+	return 0;
+}