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
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;
char hexadecimalnum[100];
printf("Enter decimal number: ");
scanf("%ld", &decimalnum);
quotient = decimalnum;
while (quotient != 0)
{
remainder = quotient % 16;
if (remainder < 10)
hexadecimalnum[j++] = 48 + remainder;
else
hexadecimalnum[j++] = 55 + remainder;
quotient = quotient / 16;
}
// display integer into character
for (i = j-1; i >= 0; i--)
printf("%c", hexadecimalnum[i]);
return 0;
}
Output:
Enter decimal number: 159
9F
Enter decimal number: 37
25
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