'commit'

2025-08-30 18:35:01 +08:00
commit 1f397eca87
6258 changed files with 1487241 additions and 0 deletions
--- a/C++课程/第十七课一维数组/tmp_t_count.cpp
+++ b/C++课程/第十七课一维数组/tmp_t_count.cpp
@@ -0,0 +1,16 @@
+#include<bits/stdc++.h>
+using namespace std;
+
+int main() {
+	int n=0,ans=0;
+	cin >>n;
+	int tmp=n;
+	while(tmp>=1) {
+		if(tmp%10==2) ans++;
+		tmp/=10;
+	}
+	cout<<ans;
+	return 0;
+}
+
+