Exercise 4.35

Given the following definitions,

char cval;      int ival;       unsigned int ui;
float fval;     double dval;

identify the implicit type conversions, if any, taking place:

(a) cval = 'a' + 3;
(b) fval = ui - ival * 1.0;
(c) dval = ui * fval;
(d) cval = ival + fval + dval;

Solution

(a) 'a' promoted to int, sum converted to char.
(b) ival converted to double, ui converted to double, result converted to float.
(c) ui converted to float, product converted to double.
(d) ival converted to float, partial sum converted to double, sum truncated to char.