Hi, I'm very new to c programming. I was tasked to create a c program where the user enters the number of digits and the binary number, and the output will the binary number separated by 3 spaces and the decimal equivalent of the binary number.
E.g
Input:
Enter the number of digits : 4
Enter the number in binaries : 1001
Output
1 0 0 1
The decimal equivalent is : 9
I tried using pow function but I didn't go far..
I also used an if loop so the number of digits is limited to a maximum of 9
> Enter the number of digits : 4
Presumably, you used scanf with %d to read this.
> Enter the number in binaries : 1001
What did you use to read this?
One you have a sequence of 0 and 1, then you just need a loop over
answer = answer * 2 + x, where x is your 0 or 1.
If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
If at first you don't succeed, try writing your phone number on the exam paper.
also using scanf with %d for the binaries
Last edited by Bluerex99; 02-23-2021 at 08:02 PM. Reason: additional info
That's pretty vague: a scanf call can have various format specifiers and various corresponding arguments. Show the code.
Look up a C++ Reference and learn How To Ask Questions The Smart WayOriginally Posted by Bjarne Stroustrup (2000-10-14)
That is probably a mistake. You can make it work for small binary numbers, but it's not very logical and hard to error check.
If you understand strings, you are best off entering the binary as a string (ascii 0 and ascii 1), then converting to machine representation (that's also a binary number, but the bits are the physical bits in memory), then convert to decimal.
I'm the author of MiniBasic: How to write a script interpreter and Basic Algorithms
Visit my website for lots of associated C programming resources.
https://github.com/MalcolmMcLean
