2013卫士通校园招聘

将十进制整数转换为十六进制字符串

1.法一

void itohex(int n, char* str){char tab[] = "0123456789ABCDEF";char tmp[8];int i = 0, j = 2;str[0] = '0';str[1] = 'x';do {tmp[i++] = tab[n%16];n /= 16;} while (n > 0);while (i >= 0){str[j++] = tmp[--i];}str[j] = '\0';}