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- #include <stdio.h>
- struct Tacka {
- int x,y;
- };
- struct Trougao {
- struct Tacka A,B,C;
- };
- /*Korištena ideja iz knjige linearne algebre i geometrije BC''=AB''+AC''*/
- int IzbaciPravougle (struct Trougao niz[], int vel){
- int i, j;
- for(i=0; i<vel; i++){
- if (
- ((niz[i].B.x*niz[i].B.x)-niz[i].A.x && (niz[i].B.y*niz[i].B.y)-niz[i].A.y) /*AB NA KVADRAT*/
- +
- ((niz[i].C.x*niz[i].C.x)-niz[i].A.x && (niz[i].C.y*niz[i].C.y)-niz[i].A.y) /*AC NA KVADRAT*/
- ==
- ((niz[i].C.x*niz[i].C.x)-niz[i].B.x && (niz[i].C.y*niz[i].C.y)-niz[i].B.y) /*BC NA KVADRAT*/
- ){
- j=i;
- while(j<vel-1){
- niz[j]=niz[j+1];
- j++;
- }
- vel--;
- }
- }
- return vel;
- }
- int main(){
- struct Trougao Niz[50];
- int i, vel, vel1;
- printf("Unesite velicinu niza: ");
- scanf("%d", &vel);
- printf("Unesite elemente niza: \n");
- i=0;
- while(i < vel){
- printf("Unesite x koordinatu tacke A %d. trougla: ", i+1);
- scanf("%d", &Niz[i].A.x);
- printf("Unesite y koordinatu tacke A %d. trougla: ", i+1);
- scanf("%d", &Niz[i].A.y);
- printf("Unesite x koordinatu tacke B %d. trougla: ", i+1);
- scanf("%d", &Niz[i].B.x);
- printf("Unesite y koordinatu tacke B %d. trougla: ", i+1);
- scanf("%d", &Niz[i].B.y);
- printf("Unesite x koordinatu tacke C %d. trougla: ", i+1);
- scanf("%d", &Niz[i].C.x);
- printf("Unesite y koordinatu tacke C %d. trougla: ", i+1);
- scanf("%d", &Niz[i].C.y);
- i++;
- }
- printf("Niz bez pravouglih trouglova glasi:\n");
- vel1 = IzbaciPravougle(Niz, vel);
- for(i=0; i<vel1; i++){
- printf("\n x koordinata tacke A %d. trougla je %d,\n ", i+1, Niz[i].A.x);
- printf("y koordinata tacke A %d. trougla je %d,\n ", i+1, Niz[i].A.y);
- printf("x koordinata tacke B %d. trougla je %d,\n ", i+1, Niz[i].B.x);
- printf("y koordinata tacke B %d. trougla je %d,\n ", i+1, Niz[i].B.y);
- printf("x koordinata tacke C %d. trougla je %d,\n ", i+1, Niz[i].C.x);
- printf("y koordinata tacke C %d. trougla je %d.\n ", i+1, Niz[i].C.y);
- }
- return 0;
- }
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