How to cast from hexadecimal to string in C?

Question

How to cast from hexadecimal to string in C?

Solution 1

You cannot simply 'cast', you will need to use sprintf to do the convertion:

unsigned int hex = 0xABC123FF;
char hexString[256];
sprintf(hexString, "0x%08X", hex);

If you want to 'cast' it to string in order to print it, you can use printf directly:

unsigned int hex = 0xABC123FF;
printf("0x%08X", hex);

Solution 2

You cannot cast from a number to a string in C. You'll have to call a function for that purpose.