C语言将两个正整数连接

//c语言将两个正整数连接
int main()
{
	int number1 = 1;
	int number2 = 2;
	char string1[5];
	char string2[5];
	/*VS2017编译器中这种形式提示不安全
	itoa(number1, string1, 10);
	itoa(number2, string2, 10);
	strcat(string1, string2);//strcat连接两个字符串
	*/
	_itoa_s(number1, string1, 10);
	_itoa_s(number2, string2, 10);
	strcat_s(string1, string2);
	int result = atoi(string1);
	printf("result = %d ", result);
	getchar();
	return 0;
}