C program to check whether given three points lie in a same line

Given three points (x1, y1), (x2, y2) and (x3, y3) , write a program to check if all the three points fall on one straight line.

 

INPUT: Six integers x1, y1, x2, y2, x3, y3 separated by whitespace.

OUTPUT: Print “Yes” if all the points fall on straight line, “No” otherwise.

Implementation:

#include<stdio.h> int main() { int x1,x2,x3,y1,y2,y3; scanf("%d %d %d %d %d %d",&x1,&y1,&x2,&y2,&x3,&y3); if( ((y2-y1)*(x3-x2)) == ((x2-x1)*(y3-y2)) ) printf("Yes"); else printf("No"); return 0; }