next() function returns the address of the next element. The function declarator of the obtain-
next() is preceded by the symbol ‘*,’ because it returns the address of the element. In the func-
tion add_num(), the next pointer is initialized with zero, that is, the next element is initialized
to zero. If we do not initialize the next with zero, it will become a wild pointer and may point to
any location of the system. Using a loop, successive numbers are added and displayed.
17.18 MORE PROGRAMS
17.19 Write a program to overload[] bracket. Use template variable for displaying float
numbers.
#include<iostream.h> ...
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