Why am i getting the following error in compress strings program

#1

runguard: warning: timelimit exceeded (wall time): aborting command
runguard: warning: command terminated with signal 15

code: https://ide.codingblocks.com/s/296759

#2

@amangupta try doing a dry run, you will see that in the else part, you are not updating the value of i, so the same code will be executed again and again and there is nothing to stop it so it goes into an infinite loop