Printf buffer

Dear all, look at this:
printf("℅d",3,3);
printf("%d %d");
It prints 333
The first 3 is printed as expected, the second goes to the buffer and is printed instead of the second "%d"
But the third "%d" not referred to any number or buffered data , it prints the third 3, where is this coming from?
Thx

You're looking at the effects of undefined behaviour. The format specifiers must correspond with the arguments, for both printf calls.

As @laserlight says: undefined behavior.

Tip: If you are using glibc and want to use only one argument, you can do, for example:

Code:

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printf( "%1$d -> 0x%1$02x", 3 );

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Will print:

Code:

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3 -> 0x03

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