Question

Write code in c

prototypes for ConvertDecimalToBinary and PrintBinary function ConvertDecimalToBinary0 pass in input decimal number and array to hold binary number (8 cells 1 for each bit) In for loop, use right bitshift to divide by 2 In for loop, use a bitmask to determine if odd or even and ternary if to assign 1 or 0 to bit array function PrintBinary pass in binary number array Use for loop to print out each element of binary number array main Input loop Ask for decimal number to convert If entered number is not between 0 and 255,

Answer 1

#include <stdio.h>
#define INT_SIZE 8 /* Size of int in bits */
#define BIT_MASK 1 /* Bit mask to find whether LSB bit is even or odd */

// function to convert decimal to binary
void convertDecimalToBinary(int decNum, int outBinNum[])
{
//to store the array of 8-bit binary number in reverse order
int index = INT_SIZE - 1;
  
for(int i=index;i >= 0;i--) {
  
//BIT_MASK of value 1 is used along with AND operator on the decimal number to get the Least Significant bit of decimal number
//if LSB is 1 i.e. odd, assign '1' or if even assign '0' to the array of 8-bit binary number in reverse order
outBinNum[i]=(decNum & BIT_MASK)?1:0;

decNum >>= 1; // right shift the decimal number by 1 position to divide by 2
}
}   

// printing 8-bit binary number
void printBinary(int binNum[])
{
printf("\nBinary number: ");
for (int j =0; j <8; j++)
printf("%d",binNum[j]);
}

// Driver program to test above function
int main()
{
int number,arrBinNum[INT_SIZE];
printf("Enter a decimal number: ");
scanf("%d",&number);

while(number<0 || number > 255)
{
printf("\nYou entered a number not between 0 and 255");
printf("\nEnter a decimal number: ");
scanf("%d",&number);
}
convertDecimalToBinary(number,arrBinNum);
  
printBinary(arrBinNum);
return 0;
}

output:

Enter a decimal number: 300                                                                                                      

                                                                                                                                 

You entered a number not between 0 and 255                                                                                       

Enter a decimal number: 100                                                                                                      

                                                                                                                                 

Binary number: 01100100