Multiplying Columns of Numbers in C Programming

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SUMMARY

The forum discussion focuses on formatting output in C programming, specifically when multiplying a column of numbers. The user successfully multiplies a number but encounters issues with displaying the result in scientific notation. The recommended solution involves using the 'e' format specifier in the printf function to achieve the desired output format. The discussion emphasizes the importance of understanding format specifiers in C, particularly for numerical output.

PREREQUISITES
  • Understanding of C programming syntax and structure
  • Familiarity with the printf function and its format specifiers
  • Basic knowledge of floating-point arithmetic in C
  • Experience with debugging and testing C programs
NEXT STEPS
  • Research C programming format specifiers, focusing on 'e', 'f', and 'g'
  • Explore advanced formatting options in the printf function
  • Learn about floating-point precision and representation in C
  • Investigate common pitfalls in numerical output formatting in C
USEFUL FOR

C programmers, software developers, and students learning about numerical output formatting in C. This discussion is particularly beneficial for those looking to enhance their skills in displaying floating-point numbers accurately.

Rajini
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Hello all,

I wrote a C program to multiply a column of numbers (for eg., number will look like this 10.45618) with some constant...
after multiplication i get the correct value (i tested using calculator).
Now the output is 0.00005672 (i use %14.9lf) ..but i want them to display like this: 5.672E or D-5.
E stands for 10.
thanks for your help.
 
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Check the documentation on format specifiers for printf. There are a lot of useful options, it would be good to know what's possible and know where to look things up -- so go googling!

I think for your particular issue, you want 'e' or 'g' instead of 'f'; I don't remember which one.
 
It's e. g uses the shorter of the e vs. f formats.
 

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