I can not see what I input when response to scanf

I used scanf in the code and when the singlechip connected to my computer, I typed some numbers in Mbed studio. However, there was just a type box in Mbed studio and I could not see what I typed. Is there any configuration or something I can do to let me see the number when I response to scanf?


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Maybe @arekzaluski can brings more info

BR, Jan

Thanks for your help.