I downloaded and installed the Turbo C++ 3.0 into my Windows XP, but cannot run. What's so I do?

Based on the lack of information that you provided to us, my only solution is for you to reinstall. Are you missing a file? Are executing the correct file? Is the installation file corrupt? Please provide an error message so we can better assist you. IR

I can only run the program through cmd but not directly by clicking on it. Also when I run the code, such like a simple code: #include <stdio.h> void main() { printf("Hello"); } I cannot get any output. I reinstalled many time but still got some problem.

Have you confirmed that the path that your icon or menu listing is referring to is matching up with the path of your program that you run from the command line? The code that you list should compile... Are you even seeing an output screen, or does it output then close the window... Perhaps, using system("PAUSE"); would help determine what output you have. Also you may want to insert a new line after your printf statement using \n or endl... this will generally flush the output buffer for you. IR