Use of typedef – 1 – Computer Sir Ki Class


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Code Learning #CPP#4341    siteicon   siteicon  

Use of typedef – 1

typedef as replacement for using a friendlier name.

Learning Objectives

  • Use of typedef as replacement of a friendlier name for a primitive datatype..

Source Code

TC++ #4341


Source Code

Run Output

Simple Interest = 13.8187

Code Understanding

typedef double amount;
Here the name amount can be used as a replacement of primitive datatype double.

amount principal=100.50;
amount term=2.5;
amount rate=5.5;
All these are declaration and initialization based on a friendlier replacement name.

amount simple_interest=principal*term*rate/100.0;
Here we use the friendlier name for output of the expression as well.


  • When typedef is used, the standard primitive type can still be used. For e.g. double can still be used for definitions.

Common Errors

  • Sometime student write primitive data type after the friendly name. The standard syntax is –
    typedef <primitive datatype> <friendly name>

Suggested Filename(s): typedef1.cpp


sunmitra| Created: 23-May-2018 | Updated: 27-Aug-2018|

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