C Programming
What will be the output of the following program? #include\ int main(){  extern int i;  i = 20;  printf("%ld ", sizeof(i));  return 0; }

Depends on the Compiler
Linker Error : Undefined symbol 'i'
4
2

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C Programming
What's wrong in the following statement, provided k is a variable of type int?for(k = 2, k <=12, k++)

The commas should be semicolons.
The variable must always be the letter i when using a for loop.
The increment should always be ++k .
The variable k can’t be initialized.
There should be a semicolon at the end of the statement.

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