## INDEX

### Decimal to hexadecimal conversion in c

1. C code to convert decimal to hexadecimal

#include<stdio.h>
int main(){
long int decimalNumber,remainder,quotient;
int i=1,j,temp;

printf("Enter any decimal number: ");
scanf("%ld",&decimalNumber);

quotient = decimalNumber;

while(quotient!=0){
temp = quotient % 16;

//To convert integer into character
if( temp < 10)
temp =temp + 48;
else
temp = temp + 55;

quotient = quotient / 16;
}

printf("Equivalent hexadecimal value of decimal number %d: ",decimalNumber);
for(j = i -1 ;j> 0;j--)

return 0;
}

Sample output:

Enter any decimal number: 45
Equivalent hexadecimal value of decimal number 45: 2D

2. Easy way to convert decimal number to hexadecimal number:

#include<stdio.h>
int main(){

long int decimalNumber;

printf("Enter any decimal number: ");
scanf("%d",&decimalNumber);

return 0;
}

Sample output:

Enter any decimal number: 45

Hexadecimal number system: It is base 16 number system which uses the digits from 0 to 9 and A, B, C, D, E, F.

Decimal number system:
It is base 10 number system which uses the digits from 0 to 9

Following steps describe how to convert decimal to hexadecimal

Step 1: Divide the original decimal number by 16
Step 2: Divide the quotient by 16
Step 3: Repeat the step 2 until we get quotient equal to zero.

Equivalent binary number would be remainders of each step in the reverse order.

For example we want to convert decimal number 900 in the hexadecimal.

Step 1:  900 / 16  Remainder : 4 , Quotient : 56
Step 2:   56 / 16  Remainder : 8 , Quotient : 3
Step 3:    3 / 16  Remainder : 3 , Quotient : 0

So equivalent hexadecimal number is: 384
That is (900)10 = (384)16

6. Write a c program to convert octal number to hexadecimal number.
8. Write a c program to convert hexadecimal number to octal number.
9. Write a c program to convert hexadecimal number to decimal number.
10. Write a c program to convert binary number to octal number. Anonymous said...

please write the program for follwing
if u enter number between 2 to 9 it will display like
5=1,1,1,1,1
5=1,1,1,2
5=1,1,3
5=1,4
5=2,1,1,1
5=2,2,1
5=3,1,1
5=4,1 Anonymous said...

hey..can someone help me?
I need to create a program that will convert binary to decimal,octal, and hexadecimal.
ex.
enter binary number:

output:
decimal=
octal= fayz said...

hey the above program will not give the currect hexa decimal output..... Anonymous said...

Question, where do you get that 48 and 55 from?
while(quotient!=0){
temp = quotient % 16;

//To convert integer into character
if( temp < 10)
temp =temp + 48;
else
temp = temp + 55;

quotient = quotient / 16;
} Anonymous said...

What the hell are you doing man.

USE SCANF("%d",&n);
printf("%x",n);

that 's it stupid

Unknown said...

temp =temp + 48; (this is used for converting the digits from 0 to 9 to its ASCII value)
i.e.
ASCII value of the digit = the value of the digit + ASCII value of 0(zero)

temp = temp + 55; (this is used for converting the digits from A(10) to F(15) to its ASCII value) i.e.
ASCII value of the digit = the value of the digit-10 + ASCII value of 'A'.
Here -10 is done to correct the ASCII to the corresponding digit. Anonymous said...

It's an exercise buddy, relax

Unknown said...

Write a c program to convert hexadecimal number to decimal number. please send this programming Anonymous said...

ascII value of A is 65,so 55 should be replaced by 65

Unknown said...

only change base any system convet u

#include
#include
using namespace std;
int main()
{
int deci=900,hex=0,rem,i=1;
while(deci>0)
{
rem=deci%16;
deci=deci/16;
hex=hex+(i*rem);
i=i*10;

}
cout<<hex;

getch ();
return 0;
} Anonymous said...

The easy way is easy hhhhhhh
Thank u alot

my blog said...

void To(long long num,char *buff,int base)
{
if(buff==NULL) return;
long long m=0,no=num,i=1;

while((no/=base)>0) i++;
buff[i]='\0';

no=num;
while(no>0)
{
m=no%base;
no=no/base;
buff[--i]=(m>9)?((base==16)?('A' + m - 10):m):m+48;
}
}

Unknown said...

That's exactly what it does

Unknown said...

Write a program in c ++ hundred decimal and display the total result.

Unknown said...

thanks, nice post

Unknown said...

Enter number x.print 1 to 100 and what number between the range devide by x to get integer.

Unknown said...

Enter number x.print 1 to 100 and what number between the range devide by x to get integer.