Qualcomm Interview Question for Software Engineer / Developers






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2
of 2 vote

volatile keywords tells the compiler that value of a varible changes at any time not by the surrounding code but by some external routine such as interrupt routine etc. Compiler will not do optimization for volatile varible.

- Yogesh Gundewar June 14, 2010 | Flag Reply
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0
of 0 votes

100% correct

- jasmin April 15, 2011 | Flag
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0
of 0 vote

it means every access to the variable declared by volatile keyword should read the memory address of the variable .

- Vincent.Y.Guo March 06, 2010 | Flag Reply
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0
of 0 vote

Volatile qualifier are used when variable's value changes unexpectedly in the program. In practice, they can be applicable at multi-threading programming, Interrupt Service Routine, memory mapping(registers)

- nick March 07, 2010 | Flag Reply
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0
of 0 vote

When you have written any volatile variables in the program then compiler is not take the control for this variable because at any time this value may change. For example :

If i write volatile time so it will change automatically so the compiler will not take a control of that.

- Rajesh Manem March 08, 2010 | Flag Reply
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0
of 0 vote

volatile variables can be changed by either OS or any other thread or any other hardware. so the variables can change at any time.

- yours.ramesh February 10, 2011 | Flag Reply


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