Question

I got a little problem when i was trying to write a program that takes a hexadecimal number and convert it to a binary number. It just don't give me the right answer. Here's my code:

#include <stdio.h>

#include <stdlib.h>

#include <errno.h>

#include <string.h>

int main(int argc, char *argv[])

{

unsigned long int i;

i=0xffff;

char buffer[65];

sprintf(buffer, "%lud", i);

long int x = 0;

while (buffer[x]) {

  

switch (buffer[x]) {

case '0':

printf("0000");

break;

case '1':

printf("0001");

break;

case '2':

printf("0010");

break;

case '3':

printf("0011");

break;

case '4':

printf("0100");

break;

case '5':

printf("0101");

break;

case '6':

printf("0110");

break;

case '7':

printf("0111");

break;

case '8':

printf("1000");

break;

case '9':

printf("1001");

break;

case 'A':

case 'a':

printf("1010");

break;

case 'B':

case 'b':

printf("1011");

break;

case 'C':

case 'c':

printf("1100");

break;

case 'D':

case 'd':

printf("1101");

break;

case 'E':

case 'e':

printf("1110");

break;

case 'F':

case 'f':

printf("1111");

break;

default:

printf("\nInvalid hexadecimal digit %c",

buffer[x]);

}

x++;

}

return 0;

}

Answer 1

`Hey,

Note: Brother if you have any queries related the answer please do comment. I would be very happy to resolve all your queries.

#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>

int main(int argc, char *argv[])
{
unsigned long int i;
i=0xffff;
char buffer[65];
sprintf(buffer, "%x", i);
long int x = 0;
while (buffer[x]) {

switch (buffer[x]) {
case '0':
printf("0000");
break;
case '1':
printf("0001");
break;
case '2':
printf("0010");
break;
case '3':
printf("0011");
break;
case '4':
printf("0100");
break;
case '5':
printf("0101");
break;
case '6':
printf("0110");
break;
case '7':
printf("0111");
break;
case '8':
printf("1000");
break;
case '9':
printf("1001");
break;
case 'A':
case 'a':
printf("1010");
break;
case 'B':
case 'b':
printf("1011");
break;
case 'C':
case 'c':
printf("1100");
break;
case 'D':
case 'd':
printf("1101");
break;
case 'E':
case 'e':
printf("1110");
break;
case 'F':
case 'f':
printf("1111");
break;
default:
printf("\nInvalid hexadecimal digit %c",
buffer[x]);
}
x++;
}
return 0;
}

Kindly revert for any queries

Thanks.