Exercices (2/2)

1. Rewrite the exercice 2 from the preceding chapter by using, sub-programs definitions, and return, for or while statements
   answer
2. A type conversion, also known as 'cast', is presented below. Using casts, propose programs to consert a numerical char, eg. '0', into a value, here 0, and its inverse function.

char c = 'X';
int i  = (int)c; // i=88=ascii code of 'X'
char d = (int)(i+1); // d='Y'

3. Giving a letter c and a number n, define a program that shift the letter c from n in the ascii table (e.g 'a'+1 ='b', 'a'+2='c'). Nb. don't forget to use modulo %256