How to display hexadecimal numbers in C?

Question

I have a list of numbers as below:

0, 16, 32, 48 ...

I need to output those numbers in hexadecimal as:

00

Answer 1

You can use the following snippet code:

#include
int main(int argc, char *argv[]){
    unsigned int i;
    printf("decimal  hexadecimal\n");
    for (i = 0; i <= 256; i+=16)
        printf("%04d     0x%04X\n", i, i);
    return 0;
}

It prints both decimal and hexadecimal numbers in 4 places with zero padding.