Convert Decimal as hex

Question

I want to convert Decimal value as Hex format in C,

I am having Decimal value 22(0x16),i want to convert it as 0x22

How to convert it ?

Please help me.

Ignoring that Decimal 22 is hex 0x16; What programming language are you using, and what data types are you working with? — Rowland Shaw, Mar 18 '14 at 07:33
Could you clarify what value you are trying to express? Is it 22 in base 10 (0x16)? Or is it 34 in base 10 (0x22)? — Tony, Mar 18 '14 at 08:33
possible duplicate of [How to convert decimal literals into hex in C, 500 to 0x0500](http://stackoverflow.com/questions/7448054/how-to-convert-decimal-literals-into-hex-in-c-500-to-0x0500) — Jongware, Mar 18 '14 at 09:36

score 0 · Answer 1 · answered Mar 18 '14 at 07:33

0

The decimal value "22" converted to hexadecimal (assuming a widespread notation) is "0x16", not "0x22".

answered Mar 18 '14 at 07:33

Codor

17,447
9
29
56

s i know,But i need like this 0x22 – Shiva Mar 18 '14 at 08:14
I'm having some trouble understanding the problem; is the value of "22" contained in a `char[]` or in an `int`? – Codor Mar 18 '14 at 08:22

score 0 · Answer 2 · answered Mar 18 '14 at 08:28

0

http://www.c4learn.com/c-programs/program-for-decimal-to-hexadecimal.html Try this piece of code. Maybe it will help.

answered Mar 18 '14 at 08:28

Dragos

296
2
4
13

score 0 · Answer 3 · answered Mar 18 '14 at 18:29

#include <stdio.h>

int conv(int n){//n>=0;
    int hex = 0;
    int base = 1;
    for(; n ; n /= 10, base *= 16){
        hex += (n % 10) * base;
    }
    return hex;
}

int main() {
    int dec = 22;
    int hex = conv(dec);
    printf("%#x\n", hex);//0x22
    return 0;
}

Convert Decimal as hex

3 Answers3