将一个十进制数转化为16进制数

 1 #include<stdio.h>
 2 #include<stdlib.h>
 3 
 4 int main()
 5 {
 6     int ival;
 7 
 8     char result[8] = "";
 9     char array[17] = "0123456789ABCDEF";
10     int index = -1;
11     printf("input the value:\n");
12     scanf_s("%d",&ival);
13 
14     while(ival != 0)
15     {
16         index++;
17         result[index] = array[ival % 16];
18         ival = ival / 16;
19     }
20     printf("Hex:");
21     while(index >= 0)
22     {
23         printf("%c",result[index]);
24         index--;
25     }
26     system("pause");
27     return 0;
28 }