在不使用字符串库C的情况下在行中删除尾随字符

started C this semester and struggling to convert knowledge of java into C. The code compiles and runs but not as I want it. The task is to write a code that read a text file line by line (I have a get line function) and outputs new text file keeping line formatting the same (meaning that if original file has 4 line output file has to have 4 line) but deleting trailing characters (space and \t). I've spend enormous amount of time pocking at this thing without success. started C this semester and struggling to conve