# C program to Convert Decimal to Hexadecimal

Decimal to hexadecimal conversion in C:

We can convert any decimal number (base-10 (0 to 9)) into hexadecinal number(base-16 (0 or 9 and A(10),B(11),C(12),D(13),E(14),F(15)) by c program.

Decimal Number

Decimal number is a base 10 number because it ranges from 0 to 9, there are total 10 digits between 0 to 9. Any combination of digits is decimal number such as 23, 445, 132, 0, 2 etc.

Hexadecimal number is a base 16 number because it ranges from 0 or 9 and A(10),B(11),C(12),D(13),E(14),F(15). Any combination of digits is Hexadecimal number such as A34, 5A4, 7DE7, ABCD etc.

To understand this example, you should have the knowledge of the following C programming topics:

C Functions
C User-defined functions

```/*
* C program to Convert Decimal to Hexadecimal
*/
#include <stdio.h>

int main()
{
long decimalnum, quotient, remainder;
int i, j = 0;

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

quotient = decimalnum;

while (quotient != 0)
{
remainder = quotient % 16;
if (remainder < 10)
else
quotient = quotient / 16;
}

// display integer into character
for (i = j-1; i >= 0; i--)
return 0;
}
```

Output:

Enter decimal number: 159
9F
Enter decimal number: 37
25

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