將十六進制數組轉換爲相應的ascii字符

Question

我想將一個十六進制數字轉換爲相應的ascii字符？

對於如：

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; 
}