帮我看下，下面这段代码哪里出了问题，谢谢大佬！

#include<cstring>
#include<iostream>
#include<string>
int main()
{
using namespace std;
char charr1[20];
char charr2[20] = "jaguar";
string str1;
string str2 = "panther";

str1 = str2;
strcpy(charr1, charr2);

str1 += "paste";
strcat(charr1, "juice");

int len1 = str1.size();
int len2 = strlen(charr1);

cout << "The string " << str1 << "contains"
<< len1 << "characters.\n";
cout << "The string" << charr1 << "cobtais"
<< len2 << "characters.\n";
return 0;
}