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Ques:-17 Write a program to receive an integer and find its octal, hexadecimal and binary equivalent.
Below is a C program that receives an integer from the user and prints its octal, hexadecimal, and binary equivalents.
#include<stdio.h>
#include<conio.h>
#include<math.h>
void main()
{
int num,binnum,octnum,hexnum,i=0,l=0,m=0,bin[20],oct[20],hex[20];
clrscr();
printf("enter any decimal number:");
scanf("%d",&num);
binnum=num;
octnum=num;
hexnum=num;
while(binnum>0)
{
bin[i]=binnum%2;
binnum=binnum/2;
i++;
}
while(octnum>0)
{
oct[l]=octnum%8;
octnum=octnum/8;
l++;
}
while(hexnum>0)
{
hex[m]=hexnum%16;
hexnum=hexnum/16;
m++;
}
printf("binary value of %d is:",num) ;
for(int j=i-1;j>=0;j--)
{
printf("%d",bin[j]);
}
printf("\n");
printf("octal value of %d is:",num) ;
for(int p=l-1;p>=0;p--)
{
printf("%d",oct[p]);
}
printf("\n");
printf("hexadecimal value of %d is:",num);
for(int q=m-1;q>=0;q--)
{
switch(hex[q])
{
case 10:
printf("A");
break;
case 11 :
printf("B");
break;
case 12:
printf("C");
break;
case 13:
printf("D");
break;
case 14:
printf("E");
break;
case 15:
printf("F");
break;
default :
printf("%d",hex[q]);
}
//printf("%d",hex[q]);
}
getch();
}
Out Put
Enter any decimal number; 15
binary value of 15 is : 1111
octal Value of 15 is : 17
hexadecimal value of 15 is :F
Another Program
#include <stdio.h>
// Function to convert a number to binary and print it
void printBinary(int num) {
int binary[32];
int i = 0;
while (num > 0) {
binary[i] = num % 2;
num = num / 2;
i++;
}
printf("Binary equivalent: ");
for (int j = i - 1; j >= 0; j--) {
printf("%d", binary[j]);
}
printf("\n");
}
int main() {
int num;
printf("Enter an integer: ");
scanf("%d", &num);
// Print octal equivalent
printf("Octal equivalent: %o\n", num);
// Print hexadecimal equivalent
printf("Hexadecimal equivalent: %X\n", num);
// Print binary equivalent
if (num == 0) {
printf("Binary equivalent: 0\n");
} else {
printBinary(num);
}
return 0;
}
Explanation:
Binary Conversion Function:
printBinary(int num): This function converts the given integer to its binary equivalent.- An array
binary[32]is used to store binary digits. - The loop continues until
numbecomes zero, storing each bit in the array. - After the loop, it prints the binary digits in reverse order.
Main Function:
- Prompts the user to enter an integer.
- Uses
%oformat specifier to print the octal equivalent. - Uses
%Xformat specifier to print the hexadecimal equivalent. - Calls
printBinaryfunction to print the binary equivalent. Special case for zero is handled separately to directly print “0”.
Sample Output:
Enter an integer: 42
Octal equivalent: 52
Hexadecimal equivalent: 2A
Binary equivalent: 101010
To compile and run this program, save it in a file named NumberConversion.c, compile it using gcc NumberConversion.c -o NumberConversion, and run it using ./NumberConversion. The program will prompt you to enter an integer and then display its octal, hexadecimal, and binary equivalents.
