Program in c with octal and hexadecimal numbers.

When we study c language then we don't notice octal number and hexadecimal number . But c language Provides the facility so we can work on octal or decimal. let see a example.

Example :- 

                         #include<stdio.h>

                         Void main()

                         {

                         Printf(“%d %d %d %d \n”,72,072,0x72,0X72);

                         }

Output = 72,58,114,114

Explanation :-

Here is to show the value of 3 types,

1st Decimal (72)

2nd octal (072)

And 3rd hexadecimal (0x72,0X72)

1st Decimal - here is %d means decimal and 72 also in  Decimal therefore also  output will remain decimal and will print 72.

2nd octal - Here %d means decimal But we put 0 before any constant no. then this not in decimal he will remain change in octal  like 072.

But in our program we use %d so this octal no (072) is change in decimal and our output become in decimal 58……

072= 0*8^2+7*8^1+2*8^0=58

3rd hexadecimal - Here% d means decimal But we put 0x,0X before any constant no. then this not in decimal he will remain change in hexadecimal  like 0x72,0X72.

But in our program we use %d so this hexadecimal no (0x72, 0X72) is change in decimal and our output become in decimal 114……

0x72= 0*16^2+7*16^1+2*16^0=114

Again wee see with a program how to change decimal to octal and hexadecimal.

#include<stdio.h>

Void main()

{

Printff(“%d,%o %x”,72,725,72);

}

Output :- 72,110,48

1st Decimal (%d)

2nd octal (%o)

And 3rd hexadecimal (%x)

1st Decimal - Here %d indicate decimal no. and 72 also a decimal no so our output also remain decimal 72.
2nd octal - Here %o indicate octal no. and 72 is  a decimal no so our output also remain change in decimal to octal so output=110.

72 =

As we know conversion rule between decimal to octal..

8	72	0
8	9	1
	1

So value is 110

3rd hexadecimal - Here %x indicate hexadecimal no. and 72 is  a decimal no so our output also remain  change in decimal to hexadecimal so output=48.

72=

As we know conversion rule between decimal to hexa decimal;

16	72	8
	4

So output = 48.