1.cout打印输出

2.代码练习

#include "iostream"
using namespace std;

int main()
{
    cout << "I love Libby!" << endl;
    cout << 10 << endl;
    cout << "I am 10" << "years old." << endl;
    return 0;
}

<<endl在中间有换行的效果，也可以不写

3.总结

4.练习

代码参考

#include "iostream"
using namespace std;

int main()
{
    cout << "If you want to learn IT," << "come to itheima." << endl;
    return 0;
}