g++ 权限被拒绝（Mac）

Question

I tried to run a c++ file with the mac terminal, but it gave me the error as shown below:

Does anyone have any idea why this is happening?

Answer 1

If you do this gcc test.cpp you will get executable called a.out , and to run it you type:

./a.out

to get executable called test you have to run g++ test.cpp -o test now you can run this:

./test