Exercise 1 :
There are two fields known as a and b. a contains 3 and b contains 7. Write on a paper a programme that exchanges the content of a in b. Expected result a=7 and b=3.

Exercise 2 :
Write a programme that adds two integers and displays the result on the screen.

Exercise 3 :
Write a programme that receives 5 numbers as input. Display the sum and the average of these five numbers.

Exercise 4 :
Write a programme that would return true if a given number (as an input) is found in the following array.
Hint : an array has a known dimension; can be searched using the index of each cell
int vector[] = {33, 4, -1, 67, 23, 5, 29, 45, 102} ;