c

luckymark · Mar 9, 2021 · 31de5e3 · 31de5e3
1 parent 03705b5
commit 31de5e3
Showing 1 changed file with 30 additions and 0 deletions.
diff --git a/level1/p05_allPrimes/allPrime.cpp b/level1/p05_allPrimes/allPrime.cpp
@@ -0,0 +1,30 @@
+#include <stdio.h>
+#include <time.h>
+
+int main()
+{
+	int i = 2;
+	int IsPrime = 1;
+	clock_t start, finish;
+	double Total_time;
+	start = clock();
+	for (i = 2; i <= 1000; i++)
+	{
+		IsPrime = 1;
+		for (int j = 2; j <= i / 2; j++)
+		{
+			if (i % j == 0)
+			{
+				IsPrime = 0;
+				break;
+			}
+		}
+		if (IsPrime == 1)
+		{
+			printf("%d\n", i);
+		}
+	}
+	finish = clock();
+	Total_time = (double)(finish - start) / CLOCKS_PER_SEC;
+	printf("%f seconds\n", Total_time);
+}