Describe the difference between a Thread and a Process?
Answer Posted / nalin jayasuriya
A thread consists of a series of computer instructions...
and usually corresponds to the CPUs execution of a series
of instructions. Threads use the registers and the 'stack'
as its memory (state).
A process contains at least one thread and private memory.
A process is the operating system loads when one executes a
program. When a process contains multiple threads, there is
usually thread synchronization needed.
In Windows programming, the primary thread is what creates
the user-interface controls and it's that thread that is
allowed exclusive privileges to update the user-interface.
In Windows programming, a process receives and sends
messages to the operating system.
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This program numbers the lines found in a text file. Write a program that reads text from a file and outputs each line preceded by a line number. Print the line number right-adjusted in a field of 3 spaces. Follow the line number with a colon, then one space, then the text of the line. You should get a character at a time and write code to ignore leading blanks on each line. You may assume that the lines are short enough to fit within a line on the screen. Otherwise, allow default printer or screen output behavior if the line is too long (i.e., wrap or truncate). A somewhat harder version determines the number of spaces needed in the field for the line numbers by counting lines before processing the lines of the file. This version of the program should insert a new line after the last complete word that will fit within a 72-character line.