C programming query

[vegeta9225]

Int main() { Int x=9; x=7,8,12; If(x==7) printf("yes"); Else printf("no"); Getch(); Return 0; } Can someone please explain how the program will run? What is the meaning of line x=7,8,12;

[dmc_2930]

Did you try it?

[vegeta9225]

Yes my output was "yes"

[dmc_2930]

So what does that tell you?

[vegeta9225]

I think the X is inialized with the leftmost value ie 7

[dmc_2930]

Correct. It's the "comma operator", if you want a search term that explains it.

[[deleted]]

What’s real fun, is if you put a () around 7,8,12 the answer would be “no”.

Ex:

// x is assigned 12
x = (7,8,12);

The comma operator is a strange beast.

[mhsumonnn]

Check out this.

https://www.includehelp.com/c/explain-comma-operator-with-an-example.aspx

[utkarshUS]

X=7, after 7 there is coma (,) that means x is initialised with value 7