I have been learning to program in C and decided that I would like to try making a denary to binary converter as this also included the use of inputs from the keyboard.
After creating a code that was manual (had to enter the results for every denary number into the code, e.g. for 1 write 1, for 2 write 10, for 3 write 11, etc.) I decided to look at codes that could take any denary number and turn it into the binary equivalent.
I found the following code (well, it was more complicated but I have stripped it down to what I wanted it to do and learnt lots in the process doing so) which I know works, however I do not really understand quite what is going on.
I understand what the main() function is doing, however I do not understand what the denary_binary function is doing. If anyone could explain what this means I would be extremely grateful. If you are also able to clear up which parts are user-defined (e.g. is 'rem' a particular function or could it have been called anything?), that would be awesome too.
Code:#include <stdio.h> #include <math.h> int main() { int n; int denary_binary(int n); printf("\nEnter a denary number.\n"); scanf("%d", &n); printf("\n%d = %d in binary.\n\n", n, denary_binary(n)); return 0; } int denary_binary(int n) { int rem, i=1, binary=0; while (n!=0) { rem=n%2; n/=2; binary+=rem*i; i*=10; } return binary; }
Originally Posted by epsilon_
