Conversion of Char to Binary in C

Question

I am trying to convert a character to its binary representation  so character --  ascii hex --  binary    I know to do that I need to shift and AND  However  my code is not working for some reason   Here is what I have   temp points to an index in a C string   char c  int j  for  j   i-1  j  gt   ptrPos  j--        char x    temp      c    x  gt  gt  i   amp  1      printf   d n   c       temp--

User · Answer

unsigned char c   for  int i   7  i  gt   0  i--         printf    d     c  gt  gt  i    amp  1   1   0       printf   n      Explanation   With every iteration  the most significant bit is being read from the byte by shifting it and binary comparing with 1    For example  let s assume that input value is 128  what binary translates to 1000 0000  Shifting it by 7 will give 0000 0001  so it concludes that the most significant bit was 1  0000 0001  amp  1   1  That s the first bit to print in the console  Next iterations will result in 0     0

User · Answer

We show up two functions that prints a SINGLE character to binary   void printbinchar char character        char output 9       itoa character  output  2       printf   s n   output       printbinchar 10  will write into the console      1010   itoa is a library function that converts a single integer value to a string with the specified base  For example    itoa 1341  output  10  will write in output string  1341   And of course itoa 9  output  2  will write in the output string  1001    The next function will print into the standard output the full binary representation of a character  that is  it will print all 8 bits  also if the higher bits are zero   void printbincharpad char c        for  int i   7  i  gt   0  --i                putchar   c  amp   1  lt  lt  i      1     0               putchar   n        printbincharpad 10  will write into the console      00001010   Now i present a function that prints out an entire string  without last null character    void printstringasbinary char  s           A small 9 characters buffer we use to perform the conversion     char output 9           Until the first character pointed by s is not a null character        that indicates end of string        while   s                   Convert the first character of the string to binary using itoa             Characters in c are just 8 bit integers  at least  in noawdays computers          itoa  s  output  2               print out our string and let s write a new line          puts output               we advance our string by one character             If our original string was  ABC  now we are pointing at  BC             s            Consider however that itoa don t adds padding zeroes  so printstringasbinary  AB1   will print something like   1000001 1000010 110001

User · Answer

Your code is very vague and not understandable  but I can provide you with an alternative   First of all  if you want temp to go through the whole string  you can do something like this   char  temp  for  temp   your string   temp    temp         do something with  temp      The term  temp as the for condition simply checks whether you have reached the end of the string or not  If you have   temp will be   0   NUL  and the for ends   Now  inside the for  you want to find the bits that compose  temp  Let s say we print the bits   for  as above        int bit index      for  bit index   7  bit index  gt   0  --bit index                int bit    temp  gt  gt  bit index  amp  1          printf   d   bit             printf   n        To make it a bit more generic  that is to convert any type to bits  you can change the bit index   7 to bit index   sizeof  temp  8-1

[c] Conversion of Char to Binary in C

Examples related to c

Examples related to string

Examples related to binary

Examples related to char

Examples related to ascii