将十六进制数组转换为相应的ascii字符

Question

我想将十六进制数字数组转换为相应的ascii字符？

例如：

arr_hex[] = {6,1,6,2,6,5,6,A,7,A}

到

arr_ascii[] = {a,b,e,j,z}

Answer 1

#include <stdio.h>

#define A 10
#define B 11
#define C 12
#define D 13
#define E 14
#define F 15

int main(void){
    int arr_hex[] = {6,1,6,2,6,5,6,A,7,A};
    int size = sizeof(arr_hex)/sizeof(*arr_hex);
    char arr_ascii[size/2];
    int i, j;
    for(j=i=0; j < size/2; i+=2){
        printf("%c", arr_ascii[j++] = arr_hex[i]*16 + arr_hex[i+1]);
    }
    printf("\n");
    return 0;
}