COBOL assumed decimal and dot difference given in this post. A useful answer to your project and interviews as well.
Simple COBOL search example useful to use in your projects.
The COBOL add or subtract formats I have given in this post. Based on your program requires you can choose.
Explained in better way about CONTINUE, NEXT SENTENCE and SECTION in COBOL. These words are most confusing to many COBOL programmers.
COMPUTE in COBOL is the best keyword you can use it in calculation. The syntax explained here simplified way you can use it. Read more.
Really the best COBOL tutorial help you go thorough quickly to write programs and prepare for interview.
The simple and effective answer for STOP RUN and how it works in various scenarios
The best way you can use Indexed file Read syntax in your project with less efforts. This is a way of writing good syntax in COBOL.