Pre-Processor directive
# include <name of file>
The Pre-Processor directives are not the part of C++ program. It is instruction to the compiler that we are going to include in the program. By this the compiler understand that the respective file is attached with the program.
Example :-
1) # include <iostream>
(This is a io stream directive , means that Input / Out put stream by this we can get the value from user and print i on the screen)
2) # include <cmath>
(This is a c math directive, means that console math by this we can used the mathematical operators such as sqrtf etc.)
The Pre-Processor directives are not the part of C++ program. It is instruction to the compiler that we are going to include in the program. By this the compiler understand that the respective file is attached with the program.
Example :-
1) # include <iostream>
(This is a io stream directive , means that Input / Out put stream by this we can get the value from user and print i on the screen)
2) # include <cmath>
(This is a c math directive, means that console math by this we can used the mathematical operators such as sqrtf etc.)
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