printf ("enter ೩ number");

scanf("%d", &number); temp =

number; while (number != 0)

{ rem = number % 10; cube =
pow(rem, 3); sum = sum +
cube; number = number /
10;

}

if (sum == temp) printf ("The given no is

printf ("fe given no is not a armstrong no")

armstrong no"); else

Output:

enter a number370 The given no is

armstrong no

enter a number1500
The given no is not a armstrong no b)

The C Preprocessor is not a part of the compiler, but is a separate step in the compilation process. In
simple terms, a C Preprocessor is just a text substitution tool and it instructs the compiler to do required
pre-processing before the actual compilation.

All preprocessor commands begin with a hash symbol (#).

The following section lists down all the important preprocessor directives - 1 .#define-
Substitutes a preprocessor macro.

2 .4#include-Inserts a particular header from another file.

3 .#undef-Undefines a preprocessor macro.