My 2nd repository #include<stdio.h> #include<math.h> #include<stdlib.h> #define AREA(a,b) a*b int main(int argc,char *argv[]) { float x3,y3,x4,y4,l,w; if(argc==5) { if(((argv[1])==(argv[3]))||((argv[2])==(argv[4]))) printf("A unique rectangle can not be made with these points.\nPlease enter the coordinates again."); else { x3=atof(argv[1]); y3=atof(argv[4]); x4=atof(argv[3]); y4=atof(argv[2]); l=fabs(atof(argv[1])-x4); w=fabs(atof(argv[4])-y4); printf("\nThe coordinates of rectangle are:\n"); printf("(%.2f %.2f)\t",atof(argv[1]),atof(argv[2])); printf("(%.2f %.2f)\n",x4,y4); printf("(%.2f %.2f)\t",x3,y3); printf("(%.2f %.2f)\n\n",atof(argv[3]),atof(argv[4])); printf("Area of rectangle is %.2f\n",AREA(l,w)); } } else printf("Proper coordinates are not entered.\nPlease enter the coordinates again."); }