Question

Write down the main function which calls the following function: int square(int a) { return(a*a); }

Answer 1

Answer:

int main – 'int main' means that our function needs to return some integer at the end of the execution and we do so by returning 0 at the end of the program. 0 is the standard for the “successful execution of the program”.

Answer 2

Here is your answer:

public static void main(String args[]) {

int sq = square(4);

}

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