Thread: reason for output in C

Hello guyz

here is a sample code in C with output but i coudnt undrstnd the reason for output values...... please explain it if any1 knw....


main()
{
printf("%d %d %d %d");
}

o/p-- 0 344 0 0

Originally Posted by ಠ_ಠ

printf doesn't actually know how many parameters you give it, it examines the string and assumes you provided that many variables, because you did not, it prints out garbage leftover in memory from another program

Yeah.

You would want to use it like:

Code:

printf("%d %d %d %d", 10, 20, 30, 40);
Printing:  10 20 30 40
or

printf("Number %d has a name of %s and an age of %d.", 375, "Sam", 17);
Printing:  Number 375 has a name of Sam and an age of 17.

Note: Most strings are either prefixed or sufixed with a new line characters ("\n") - so you would have something like:

Code:

printf("Hello world\n");

If you don't, it'll all print on the same line, soft wrapping at the end of the terminal.

synadacate

i understood wt u said.... n i knw it..... bt here the prob is little bit different.....

Originally Posted by ಠ_ಠ
printf doesn't actually know how many parameters you give it, it examines the string and assumes you provided that many variables, because you did not, it prints out garbage leftover in memory from another program

these are not the garbage values.... coz on every computer the values are same.

salem

thnx..... ya iknw... on diff. compilers the result wl b diff.

r u sure dat da same compiler cn give same rslt on evry computer..... n da rslt is nt machine dependent?

Originally Posted by deepak1906

synadacate
these are not the garbage values.... coz on every computer the values are same.

There are garbage; most likely from your own program.
If you used a different Compiler they might change or a different OS.

I would have guess all zeros as the most likely values to happen for an compiler not displaying garbage values. One of yours was not zero.

Tim S.

stahta01


yeah.... m jst thinking.....y the second value is not 0?

You know what else is garbage? The crappy SMS-speak you're spewing through your keyboard. SPEAK PROPER ENGLISH!

You haven't specified any values to print, so printf just made up some.

Originally Posted by rags_to_riches

You know what else is garbage? The crappy SMS-speak you're spewing through your keyboard. SPEAK PROPER ENGLISH!

I agree. I could not have said it better myself.