just look at the for loop I made above up there. you can change 8 to however many bits you need.
also you might want to start the loop at 32 and count backwards, if not your bits will be backwards.
just look at the for loop I made above up there. you can change 8 to however many bits you need.
also you might want to start the loop at 32 and count backwards, if not your bits will be backwards.
I would recommend looking at a book that has a chapter on binary operations. Up until last week I was compeltely clueless about how to do all this and why you would need bit shifting, but I learned all about flags and masking and now it makes a lot more sense to me. Before you continue on this program I would recommend looking at some tutorials on things like masking bits, etc... The book I was looking at was called "Practical C Programming" and it's one of those "In a Nutshell" books with the monochrome animals on the front.
thanks sean, thats a pretty good idea.. i'll definently look up some tutorials, and i have a nice fat c book with me
a first book of ANSI C (third edition)
although i have trouble understanding it..
but thanks to everyone who has helped..
i should be able to get this done
Added your code to output in binary.
Code:#include <stdio.h> #include <stdlib.h> #include <math.h> FILE * inputdata; void readfromfile(void); int main() { readfromfile(); return (0); } void readfromfile(void) { unsigned int value; int i=0, j; inputdata = fopen("data\\numbers.txt","r"); printf("Line # Hex Decimal Binary\n"); while (fscanf(inputdata,"%x",&value) == 1) { printf("%i %8x %-16u",i , value , value); for(j = 0; j < 32; j++) printf("%d", (value >> (31 - j)) & 1); printf("\n"); i++; } }
It is ALWAYS good to have a good book close by. You never know when you might need to look something up.
Sam's Teach Yourself C in 24 Hours is a really good C book and has a very good explanation of bit shifting and binary in general.
thanks heaps! i wasn't thinking straight with that.. i was trying to put the for loop to add it ahead of the first printf, i couldn't think liek the program..
it really wasn't that hard.. but i can't thank you enough!
