'commit'

TangDou/ShuLun/SL8.cpp

@@ -0,0 +1,18 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+//判断是不是质数
+bool isPrime(int n) {
+    for (int i = 2; i <= n / i; i++)
+        if (n % i == 0) return false;
+    return true;
+}
+
+int main() {
+    int n;
+    cin >> n;
+    for (int i = 2; i <= n; i++)
+        if (isPrime(i)) cout << i << " ";
+    return 0;
+}