read PPM file and store it in an array; coded with C

Question

I need to read a PPM file and store it in an array written in C. Can anybody help me out doing this?

Thanks a lot.

Answer 1

Here is the PPM specification.

The PPM file is built in 9 sections separated by white-spaces.

• Open the file
• read until the first white space and check you got P6. Then skip other white-spaces.
• read until the next white space, convert your buffer to an integer width. Then skip other white-spaces
• read until the next white space, convert your buffer to an integer height. Then skip other white-spaces
• Allocate a 2D array of integers in the size of height*width
• read the max-val
• read line by line and fill the array