1. Summarize the distinction between the declaration and the definition of a variable. 2. Explain the differences between a local variable and a global variable. 3. a. What is operator precedence? b....

1.
Summarize the distinction between the declaration and the definition of a variable.

2.
Explain the differences between a local variable and a global variable.

3.
a. What is operator precedence?

b. Depending on operator precedence, what values could be associated with the expression 6 + 2 * 3?

4.
Explain the advantages of code reuse.

5.
What will be the output of the following C code? Explain your answer.

#define sqr(X) X * X

main() {

int k = sqr (10 + 20);

printf("%d", k);

}