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owen corpening

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C C++ Convert Hex To Ascii

05.18.2006

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        // Presented with hex such as 0x12345abc perhaps there is a spot in there
// which represents an ascii char - such as 53 would be 'S'
// Common when dealing with hardware-related data structures and wire
// protocols

#include <stdio.h>
#include <stdlib.h>

/*
*	To convert 53 to the character 'S':
*	char returnVal = hexToString('5', '3');
*/
char hexToAscii(char first, char second)
{
	char hex[5], *stop;
	hex[0] = '0';
	hex[1] = 'x';
	hex[2] = first;
	hex[3] = second;
	hex[4] = 0;
	return strtol(hex, &stop, 16);
}
int main(int argc, char* argv[])
{
	printf("%c\n", hexToAscii('5', '3'));
}