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This c program prints IP (internet protocol) address of your computer, system function is used to execute the command ipconfig which prints IP address, sub net mask and default gateway. The code given below works for Windows xp and Windows 7. If you are using turbo c compiler then execute program from folder, it may not work when you are working in compiler and press Ctrl+F9 to run your program.
the program is:

#include<stdlib.h>
 
int main()
{
   system("C:\\Windows\\System32\\ipconfig");
 
   return 0;
}

Run the code and see the result