reading bmps

i want to make a program in c, to convert a bmp (or other types) file to text. i have read some thing about the structures of the headers, but i dont know how to start. any help?

you mean that you can see the shapes of the pictures in ASCII? else just let C change the name to .txt ;)

i mean to read the bits of each pixel, so i can change them. something like steganography.

you could read the file you'd gt text the encrypt that some how then you could save it and have a decrypter. to fix itmarkup #!/usr/bin/python a=open('image.bmp', 'r')#open file to encode b=a.read().replace('a','password')#chnage a to password #Or some encryoting algo. c=open('image1.enc', 'w')#make a file .enc (ranodm lol) c.write(b)# write to it c.close()#close files a.close() that will take a bmp file and make it impossible to view by replacing all the a's in the encoding with password. this is the decoder.

#!/usr/bin/python
a=open('image1.enc', 'r')#opne image file
b=a.read().replace('password','a')# read it and chnage pasword to a
#or the revearse algo
c=open('image.bmp', 'w')#open file to wreite to
c.write(b)#wriet to it
c.close()#close files
a.close()

That would do it, its a bit conveluted but it makes it easier to understand