Why does my cout output not appear immediately?

Question

it does not print the string put in the loop. The program was written with the help of g++, with sys/types.h header file included

for(int i=0;i<9;i++)
{
    cout<<"||";
    sleep(1);
}

Answer 1

You're not flushing your output.

std::cout << "||" << std::flush;