#include<stdio.h> #include<stdlib.h> intmain() { int i,j; int x=20; int y=0; int left=0; int right=30; int top=0; int bottom=30; int k=1; int velocity_x=1; int velocity_y=1; while(1) { x=x+velocity_x; y=y+velocity_y; system("cls"); for(i=0;i<x;i++) printf("\n"); for(j=0;j<y;j++) printf(" "); printf("o"); printf("\n"); if(x==top||x==bottom) { velocity_x=-(velocity_x); } if(y==left||y==right) { velocity_y=-(velocity_y); } } return 0; }
quadrilateral bouncing ball
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