一个简单的C语言程序遇到了一个不知道如何解决的问题

Question

#include<stdio.h>
#define MAX 200
int main(void) {
	char n[MAX];
	int temp = 0, sum = 0, count = 0, sum_temp = 0;
	int val[10];
	scanf_s("%s", n);
	for (; n[temp] != '\0'; temp++) {
		switch (n[temp]) {
		case '0': break;
		case '1': sum += 1; break;
		case '2': sum += 2; break;
		case '3': sum += 3; break;
		case '4': sum += 4; break;
		case '5': sum += 5; break;
		case '6': sum += 6; break;
		case '7': sum += 7; break;
		case '8': sum += 8; break;
		case '9': sum += 9; break;
		default: break;
		}
	}
	sum_temp = sum;
	if (sum_temp == 0) {
		printf("ling");
	}
	else {
		while (sum_temp) {
			val[count++] = sum_temp % 10;
			sum_temp /= 10;
		}
		while (count--) {
			switch (val[count]) {
			case 0: printf("ling");  break;
			case 1: printf("yi"); break;
			case 2: printf("er"); break;
			case 3: printf("san"); break;
			case 4: printf("si"); break;
			case 5: printf("wu"); break;
			case 6: printf("liu"); break;
			case 7: printf("qi"); break;
			case 8: printf("ba"); break;
			case 9: printf("jiu"); break;
			default: break;
			}
			if (count > 0)
				putchar(' ');
		}
	}
	return 0;
}

源代码如上所示。在Visual Studio 2015上debug时在scanf_s这个语句执行后就弹出了下列提示：

Exception thrown at 0x0F72FBA4 (ucrtbased.dll) in ConsoleApplication1.exe: 0xC0000005: Access violation writing location 0x00190000.

If there is a handler for this exception, the program may be safely continued.

为什么我在其他环境中编译这个程序没有问题却在VS上出了莫名其妙的异常？

还有怎么关闭对scanf这个函数错误的提示？

Answer 1

scanf_s("%s", n);  改成  scanf_s("%s", n, MAX);

Answer 2

thanks!