Question

How to work with base 16 in C

Answer 1

#include <stdio.h>
 
int main(void)
{
    unsigned int n;
     
    printf("Enter hex number: ");
    scanf("%x", &n); // %x - input hex numbers
    printf("n (base 10) = %d\n", n);
     
    printf("Enter a number: ");
    scanf("%d", &n);
    printf("n (base 16) = %x\n", n); // %x - output hex number
     
    n = 6670; // set deciaml number
    printf("n (base 16) = %x\n", n);
    n = 0x1A0E; // set hex number, note the: 0x before the number
    printf("n (base 16) = %x\n", n);
  
    return 0;
}


/*
run:

Enter hex number: 16
n (base 10) = 22
Enter a number: 255
n (base 16) = ff
n (base 16) = 1a0e
n (base 16) = 1a0e

*/

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