76 lines
2.0 KiB
C
76 lines
2.0 KiB
C
#include<stdio.h>
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#include<string.h>
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#include<stdlib.h>
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#define SIZE 100
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struct student {
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char name[SIZE];
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int votes;
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};
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int find_student(struct student* students,int size, const char* name);
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int compare(const void* p1, const void* p2);
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int main(){
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struct student databaza[SIZE];
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memset(databaza,0,SIZE*sizeof(struct student));
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int size = 0;
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while(1){
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char line[SIZE];
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memset(line,0,SIZE);
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char* r = fgets(line,SIZE,stdin);
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if (r == NULL){
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// Nastal koniec načítania
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break;
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}
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char* end = NULL;
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int value = strtol(line,&end,10);
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if (value == 0){
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// Premena sa nepodarila
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break;
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}
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char *name=end+1;
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int id = find_student(databaza,size,name);
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if (id< 0){
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// Skopirujte zaznam na posledne miesto v poli
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memcpy(databaza[size].name,name,strlen(name)+1);
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databaza[size].votes=value;
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// Zvacsite pocet zaznamov
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size+=1;
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}
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else {
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// pripocitajte pocet hlasov
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databaza[id].votes+=value;
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}
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if(size>1)
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qsort(databaza, size, sizeof(struct student), compare);
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}
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printf("Vysledky:\n");
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for(int idx=0;databaza[idx].name[0]!='\0';idx++)
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printf("%d %s", databaza[idx].votes, databaza[idx].name);
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return EXIT_SUCCESS;
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}
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int find_student(struct student* students,int size, const char* name){
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// Dopíšte cyklus, ktorý prejde všetky položky v databáze
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// a ak nájde zhodné meno tak vráti jeho index.
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for(int idx=0; idx<size;idx++)if(strcmp(students[idx].name,name)==0)return idx;
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return -1;
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}
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int compare(const void* p1, const void* p2){
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struct student* s1 = (struct student*)p1;
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struct student* s2 = (struct student*)p2;
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// s1->votes je počet hlasov
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// s1->name je meno študenta
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return (s2->votes)-(s1->votes)-1;
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}
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