[C++知识库]C语言，区间相交

关于区间相交问题，主要在循环条件和判定条件。

#include?<stdio.h>

int?main()
{
???int?N,i,a,b,c,d;
????scanf("%d",&N);
????for(i?=?1;i<=N;i++)
????{
????scanf("%d%d",&a,&b);
????scanf("%d%d",&c,&d);
????????if(d>=a&&d<=b||c>=a&&c<=b||a>=c&&a<=d||b>=c&&b<=d)
????????{
????????printf("Yes\n");
????????}
????????else
????????{
????????printf("No\n");
????????}
????}
???return?0;
}