Answer Posted / daniboy

A volatile variable is one whose VALUE CAN CHANGE
UNEXPECTEDLY. Consequently, the compiler can make NO
ASSUMPTIONS about the value of the variable. In
particular, the optimizer must be careful to RELOAD the
variable every time it is used instead of holding a copy in
a register.
Examples of volatile variables are:

(a) Hardware registers in peripherals (e.g., status
registers)
(b) Non-stack variables referenced within an interrupt
service routine.
(c) Variables shared by multiple tasks in a multi-
threaded application.

Source: 10 Best Questions to would-be Embedded Programmers -
By Nigel Johns

What are pragmas and what are they good for?

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Who developed c language?

1098

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What is file in c language?

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What is the right type to use for boolean values in c?

1040

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What is the total generic pointer type?

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Are pointers really faster than arrays?

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What are the advantages of the functions?

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Program will then find the largest of three numbers using nested if-else statements. User is prompted to enter three numbers. Program will find the largest number and display it on the screen. All three numbers entered by the user are also displayed. If user enters 21, 33, and 5, the output should be as follows: You entered: 21, 33 and 5. The largest number is 33.

1695

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how to construct a simulator keeping the logical boolean gates in c

2261

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Is c pass by value or reference?

1041

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How would you rename a function in C?

1046

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write a program to reverse a every alternetive words in a string in a place. EX: Input is "this is the line of text" Output should be "shit is eht line fo text" Please any one tell me code for that.

2104

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what is the difference between 123 and 0123 in c?

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Write a program that takes a 5 digit number and calculates 2 power that number and prints it(should not use big integers and exponential functions)

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Explain what is a 'locale'?

1083

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