C programming

Question

void main( )
{ 
    int a=3,b=1;
     if( b>a, a>b) printf(“%d”,--b);
    else printf(“%d”, a++); 
}

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"Two things are infinite: the universe and human stupidity; and I'm not sure about the universe."

Answer 1

Consider the Line in program

 if( b>a, a>b)

Here b>a will evaluated false  and a>b will evaluated true

So conditional statement becomes

 if( 0, 1)

In the C and C++ programming languages, the comma operator (represented by the token ,) 
is a binary operator that evaluates its first operand and discards the result, 
and then evaluates the second operand and returns this value (and type).

Note:Comma operator returns the value of the rightmost operand when multiple comma operators are used .

So it will return 1 to if statement as condition a>b will evaluated true so if statement will be executed  return printf(“%d”,--b); value.

,Here b=1

So output:0

Comments

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@Lord Krishna Ji if you have any doubt in this then you can ask ?

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@Manojk i understood till here "Here b=1"

but why output is 0 ?

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if( 0, 1) so

printf(“%d”,--1);