整型转字符串itoa

itoa代码的实现
#include
#include
value整型 以 radix 进制 做转换，转换结果保存到buffer数组
char* my_itoa(int value, char* arr, int radix)
{
assert(value != 0);
char index[] = { "0123456789ABCDEF" };
int flag = value < 0 && radix == 10 ? 1 : 0; if (flag == 0) { arr[0] = '-'; value * -1; } unsigned int value_temp = (unsigned int)value; int i= flag; for (; value_temp != 0; i++) { arr[i] = index[value_temp % radix]; value_temp = value_temp / radix; } arr[i] = '

整型转字符串itoa最先出现在Python成神之路。