#include <stdio.h> #include<math.h> int main() { int x1 = 0, y1 = 0,x2 = 0,y2 = 0; float circumference; scanf("%d %d",&x1,&y1); scanf("%d %d",&x2,&y2); float euclidean_distance =sqrt((x1 - x2)*(x1 - x2)+(y1 - y2)*(y1 - y2)); float manhattan_distance = ...