Variable declaration on "start value" of FOR loop - What C standards allow it? -

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c language

on c standard following code compiles without error (c89, c99, c11)

for (int = 0; < 10; ++i) {      something...  }

i understand c compilers won't accept version above , variable "i" must declare outside parentheses. so:

int i; (i = 0; < 10; ++i) {      something...  }

this allowed since c99. c99 , c11 support it.

in c89, first clause of for statement can expression. in c99 , c11 can expression or declaration. 1 single declaration allowed (though can declare several variables).


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