VS 2017 'scanf': This function or variable may be unsafe. Consider using scanf_s instead

1、解决办法：在头部加上 #pragma warning(disable:4996) 即可，示列:

#pragma warning(disable:4996)
#include <stdio.h>

int main() {

    int v = 0;
    scanf("%d \n", &v);
    return 0;
}