151 lines
3.3 KiB
C
151 lines
3.3 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#define LINE_SIZE 100
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#define LIST_SIZE 20
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struct pizza{
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char name[LINE_SIZE];
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float prize;
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};
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int read_item(struct pizza* item);
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int read_pizza_list(struct pizza* list);
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int compare_pizza(const void * left, const void * right) {
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const struct pizza * a = (const struct pizza *) left;
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const struct pizza * b = (const struct pizza *) right;
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if (a->prize > b->prize){
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return 1;
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}
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else if (a->prize < b->prize){
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return -1;
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}
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else{
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return 0;
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}
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}
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int main(int argc, char *argv[]) {
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struct pizza list[LIST_SIZE];
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memset(list,0,LIST_SIZE*sizeof(struct pizza));
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int counter = 0;
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for (int i=0; i< LIST_SIZE; i++){
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struct pizza item;
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memset(&item,0,sizeof(struct pizza));
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// Nacitajte polozku do pomocnej premennej
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// Na nacitanie pouzite vlastny kod
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int r = read_item(&item);
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if (r){
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// Ak sa nacitanie podarilo, skopirujte polozku do pola
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memcpy(&list[i],&item,sizeof(struct pizza));
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// Spocitame uspesne nacitane polozky
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counter += 1;
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}
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else{
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// Ak sa nacitanie nepodarilo, nasli sme poslednu polozku
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// Prerusim nacitanie
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break;
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}
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}
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qsort (list, counter, sizeof(struct pizza), compare_pizza);
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int i=0;
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for (i = 0; i < counter; i++) {
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printf("%s%.6f\n", list[i].name, list[i].prize);
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}
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return 0;
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}
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int read_item(struct pizza* item){
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char line[LINE_SIZE];
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char line2[LINE_SIZE];
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memset(line,0,LINE_SIZE);
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memset(line2,0,LINE_SIZE);
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while (1){
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char *r = fgets(line,LINE_SIZE,stdin);
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if(r != NULL && line[1] != 0){
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int i=0;
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//printf("%s",line);
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while(line[i]!='\n' || line[i]!='\r'){
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if(line[i]=='\n'){
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//printf("Koniec n riadku\n");
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break;
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}
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else if(line[i]=='\r'){
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//printf("Koniec r riadku\n");
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break;
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}
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else if((line[i]>='a' && line[i]<='z') || (line[i]>='A' && line[i]<='Z') || line[i]==' ' || line[i]=='-'){
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//printf("%c\n",line[i]);
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i++;
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}
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else{
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//printf("NeplatnĂ˝ znak %c\n",line[i]);
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return 0;
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}
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}
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i=0;
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char *r2 = fgets(line2,LINE_SIZE,stdin);
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if(r2 != NULL && line2[1] != 0){
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int i=0;
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int comma=0;
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int comma_number=0;
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//printf("%s",line);
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while(line2[i]!='\n' || line2[i]!='\r' || line2[i]!='\0'){
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if(line2[i]=='\n'){
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//printf("Koniec n riadku\n");
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break;
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}
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else if(line2[i]=='\r'){
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//printf("Koniec r riadku\n");
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break;
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}
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else if(line2[i]=='\0'){
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//printf("Koniec r riadku\n");
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break;
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}
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else if((line2[i]>='0' && line2[i]<='9') || line2[i]=='.'){
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//printf("%c\n",line[i]);
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if(line2[i]=='.'){
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comma++;
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}
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if(line2[i]!='.' && comma){
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comma_number++;
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}
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i++;
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}
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else{
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//printf("NeplatnĂ˝ znak %c\n",line[i]);
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return 0;
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}
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}
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i=0;
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//printf("Comma %d\n",comma);
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//printf("Comma number %d\n",comma_number);
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if(comma!=1)return 0;
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if(comma_number!=2)return 0;
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float value = strtof(line2,NULL);
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if (value == 0.0F){
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return 0;
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}
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item->prize = value;
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strcpy(item->name, line);
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return 1;
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}
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else{
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return 0;
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}
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}
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else{
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return 0;
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}
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}
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} |