diff --git a/DailySummary/日期转换函数.cpp b/DailySummary/日期转换函数.cpp
new file mode 100644
index 0000000..d1a8ce3
--- /dev/null
+++ b/DailySummary/日期转换函数.cpp
@@ -0,0 +1,22 @@
+#include <iostream>
+#include <cmath>
+using namespace std;
+
+int converse(int n, int d){
+	int arr[100], index = 0;
+	while(n != 0){
+		arr[index++] = n % d;
+		n = n / d;
+	}
+	int result = 0;
+	for(int i = index - 1; i >= 0; i--){
+		result = result + arr[i] * pow(10, i);
+	}
+	return result;
+}
+int main(){
+	int a, b;
+	cin >> a >> b;
+	cout << converse(a, b);
+	return 0;
+}