#include <iostream>
#include <string.h>
using namespace std;
int main()
{
cout<<"The length of " ulysses "is:\t";
cout<<strlen("ulysses");
cout<<'\n';

cout<<"The size of "ulysses" is:\t";
cout<<sizeof("ulysses");
cout<<endl;
}

修改如下：

#include <iostream>
#include <string.h>
using namespace std;

int main()
{
    cout<<"The length of \"ulysses\" is:\t";
    cout<<strlen("ulysses");
    cout<<'\n';

    cout<<"The size of \"ulysses\" is:\t";
    cout<<sizeof("ulysses");
    cout<<endl;
}

问题的所在就是你的双引号，这里要用到转义字符，比如\n就是换行的意思，\r就是回车的意思，\"这样才是双引号；
正确代码：
#include <iostream>
#include <string.h>
using namespace std;
int main()
{
cout<<"The length of \"ulysses\" is:\t";
cout<<strlen("ulysses");
cout<<'\n';

cout<<"The size of \"ulysses\" is:\t";
cout<<sizeof("ulysses");
cout<<endl;
}

顶，3楼！！！

#include <iostream>
 #include <string.h>
 using namespace std;
 int main()
 {
 cout<<"The length of  ulysses is:\t";
 cout<<strlen("ulysses");
 cout<<'\n';
cout<<"The size of ulysses is:\t";
 cout<<sizeof("ulysses");
 cout<<endl;
 }

3楼说得对

3楼