How to assign a value to a variable by using expression? In C language

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How to assign a value to a variable by using expression? in C language
Find average of the two nos without division or ternary operator

int a=10,b=20;
int avg=<expression>;
printf("%d",avg);

What I have tried:

I have no Idea

How to assign a value to a variable by using expression? in C language
Find average of the two nos without division or ternary operator

int a=10,b=20;
int avg=<expression>;
printf("%d",avg);

Posted 2-Apr-17 7:11am

Member 13100982

Updated 2-Apr-17 14:09pm

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Comments

Ravi Bhavnani 2-Apr-17 13:30pm

(1) How to assign a value to a variable by using expression? in C language
If you truly have no idea how to do this, you need to re-read your programming textbook.

(2) Find average of the two nos without division or ternary operator
One way to do this would be to successively increment(decrement) the smaller(larger) of the two numbers until you converge at a common value, which is the average.

/ravi

PIEBALDconsult 2-Apr-17 15:20pm

http://mathforum.org/library/drmath/view/57574.html

2 solutions

Solution 1

Think about your problem:
you need to know what is the half of something, one way is to divide by 2, there is another way, it is mathematics.

We do not do your HomeWork.

Posted 2-Apr-17 7:40am

Patrice T

Comments

Member 13100982 2-Apr-17 13:45pm

Sorry.. We should not use DIVISION Operator

I am having a concept
int x=a+b;
y=0;
while(x>0)
{
x=x-2;
y++;
}

Now Y is the answer.. I dont know ,,how to assign the value of Y to AVG in a single experssion

Patrice T 2-Apr-17 13:50pm

Ask a math teacher "How to divide by 2 without using a division?"

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Mehedi Shams · Accepted Answer · 2017-04-02T14:09:00

Solution 2

Hi Member 13100982,

Are you allowed to use bit operations? Then following is the simplest solution:

int a = 10, b = 20;
int avg = (a + b) >> 1;
printf("%d", avg);

algorithm - Fast average without division - Stack Overflow[^]

Posted 2-Apr-17 14:09pm

Mehedi Shams

Updated 3-Apr-17 12:49pm

v2

Comments

Member 13100982 3-Apr-17 3:02am

Thanks Mehedi Shams