December 2016
Intermediate to advanced
737 pages
25h 7m
English
Content preview from Computer Fundamentals and Programming in C (RMK)
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3.16 Basics of C Programming
change the value placed in it. Now, consider the statement const int a=10;. The usage of the const
qualifier places a lock on the box after placing the value
10 in it. Since the box is transparent, it is
possible to see (i.e. read) the value placed within the box, but it is not possible to modify the
value within the box as it is locked. This is depicted in Figure 3.3.
a
20
a
20
10
2000
Address
2000
(a)
int a=10;
(b)
const int a=10;
10
Figure 3.3 | Use of const qualifier
Since qualified constants are placed in the memory, they have l-value. However, as it is not
possible to modify them, this means that they do not have a modifiable ...
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