C语言 · 矩形面积交

 1 #include<stdio.h>
 2 #define max(x,y) (x>y?x:y)
 3 #define min(x,y) (x<y?x:y)
 4 int main(){
 5     double x1,y1,x2,y2,x3,y3,x4,y4;      
 6     double m1,n1,m2,n2;    
 7     scanf("%lf%lf%lf%lf",&x1,&y1,&x2,&y2);
 8     scanf("%lf%lf%lf%lf",&x3,&y3,&x4,&y4);
 9     m1 = max(min(x1,x2),min(x3,x4));
10     n1 = max(min(y1,y2),min(y3,y4));
11     m2 = min(max(x1,x2),max(x3,x4));
12     n2 = min(max(y1,y2),max(y3,y4));
13     if(m2>m1 && n2>n1)
14         printf("%.2f\n",(m2 - m1)*(n2 - n1));
15     else
16         printf("0.00\n");
17     return 0;
18 }