o Invoke the function display_binary () to display the o Declare a mask for unit

Question

o Invoke the function display_binary () to display the o Declare a mask for unit number - the lowest 3 bits in . Use this mask and bitwise & to retrieve the unit code in binary the code. number - store it in a variable. Display the unit number to the screen. Declare a mask to retrieve the signal (the 7th bit) . Use thismask and bitwise & to retrieve the signal - Display the outcome to the screen. o Declare a mask to retrieve the number of tanks. . Use the mask, bitwise & and then >> to retrieve the number of tanks. Display it to the screen. o Declare a mask to change the safety signal, bit 7, to 0 and leave all the other bits in the code the same. Use this mask and bitwise to change the code. . Display the changed code in decimal and binary

Explanation / Answer

It was not clear what does the question mean by "number of tanks" so not answering that part. The code is able to handle 32 integers including negative integers.

#include <stdio.h>
void display_binary(unsigned int code,int flag)
{
   if(flag == -1) printf("1");
   unsigned int i;  
    for (i = 1 << 31; i > 0; i>>=1)
    {
        if(code & i)
        {
           printf("1");
        }
        else
        {
           printf("0");
        }
    
   }
}
int main(int argc, char ** argv)
{
   int code,flag=1;
   printf("Enter Code: ");
   scanf("%d",&code);
  
   if(code<0) {
       flag=-1;
       code*=-1;
   } // Handling negative numbers
   code = (unsigned int)(code);
  
   // Displaying code in binary
   printf("Binary Representation : ");
   display_binary(code,flag);
   printf(" ");
  
   // Mask to get the last three bits
   unsigned int three_bit_mask = 1 + (1<<1) + (1<<2) ;
   unsigned int unit_number = (code & three_bit_mask);
   printf("Unit Number : %d ",unit_number);
  
   // Mask to get the seventh bit
   unsigned int seventh_bit_mask = 1<<6 ;
   code & seventh_bit_mask ? printf("Seventh Bit : 1 ") : printf("Seventh Bit : 0 ");

   // Mask to change seventh bit to zero
   int change_seventh_mask = 0;
   int i;
   for(i=0;i<=31;i++)
   {
           if(i!=6)
           change_seventh_mask += (1<<i);
   }

   // Printing the chaged code value
   unsigned int changed_code = (code & change_seventh_mask);
   printf("Changed Code : %d ",flag*changed_code);

   return 0;
}

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