添加了许多代码文件

#146. 回文数.cpp

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+#include <iostream>
+#include <cstring>
+#include <cstdio>
+#include <iomanip>
+using namespace std;
+int main(){
+	int a;
+	int b;
+	int sum=0;
+	cin >>a;
+	b=a; 
+	while(a){
+		sum=sum*10+a%10;
+		a/=10;
+	}
+	if(b==sum){
+		cout <<"yes";
+	}
+	else{
+		cout <<"no";
+	}
+	return 0;
+}
+
+