How to print hexadecimal in c

Using %x format specifier in printf, we can print the hexadecimal values.




%x

%x will print the hexadecimal in small letters.

Like, aaff2, ffd etc.

Example

#include<stdio.h>

int main()
{
    int i = 255;

    printf("255 in hexadecimal = %x\n",i);

    return 0;
}

Output

255 in hexadecimal = ff




%X

%X will print the hexadecimal in capital letters.

Like, AAFF2, FFD etc.

Example

#include<stdio.h>

int main()
{
    int i = 255;

    printf("255 in hexadecimal = %X\n",i);

    return 0;
}

Output

255 in hexadecimal = FF




Useful Resources

https://www.log2base2.com/number-system/hexadecimal-number-system.html

https://www.log2base2.com/number-system/hex-to-decimal.html


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