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

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

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C Programming
String concatenation means -

Comparing the two strings to define the larger one.
Merging two strings.
Partitioning the string into two strings.
Extracting a substring out of a string.
Combining two strings.

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