136 lines
3.1 KiB
C
136 lines
3.1 KiB
C
#include<string.h>
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#include<stdio.h>
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#include<math.h>
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#include<stdlib.h>
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#define SIZE 100
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#define ERROR_OUTPUT stderr
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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 check_and_parse_line(char *line, int *votes, char *name) {
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// Nájdenie prvej medzery v reťazci
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char *space_pos = strchr(line, ' ');
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// Kontrola, či sa našla medzera
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if (space_pos == NULL) {
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return 0; // Neplatný formát riadku
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}
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// Konverzia počtu hlasov zo substringu reťazca do celého čísla
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*votes = atoi(line);
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// Nastavenie ukazovateľa name na miesto za prvou medzerou
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char *name_start = space_pos + 1;
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// Kopírovanie mena zo zvyšku reťazca (za prvou medzerou) do poľa name
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strcpy(name, name_start);
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// Odstránenie konca riadka zo záznamu mena (ak je prítomný)
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char *newline_pos = strchr(name, '\n');
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if (newline_pos != NULL) {
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*newline_pos = '\0';
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}
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return 1; // Platný formát riadku
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}
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int find_student(struct student* students,int size, const char* name){
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for (int i = 0; i < size; i++){
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if (strcmp(students[i].name, name) == 0) {
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return i; //ak najde studenta
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}
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}
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//printf("nenaslo studenta\n"); // ak nenajde studenta
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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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const struct student* s1 = (const struct student*)p1;
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const struct student* s2 = (const struct student*)p2;
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return strcmp(s2->name, s1->name);
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}
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*/
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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)); //inicializujem pamat, vynulujem
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int size = 0;
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char line[SIZE];
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int votes;
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char name[SIZE];
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//nacitanie vstupu
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while (fgets(line, SIZE, stdin) != NULL){
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if (!check_line(line, &votes, name)){
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printf(ERROR_OUTPUT, "chybny format vstupu: %s\n", line);
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continue;
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}
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/*
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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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return -1;
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}
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//nacitanie celeho cisla, premiena kym nepride na znak ktory nieje cislo
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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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return 1;
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}
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// pomocné pole
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char name[SIZE];
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// vynulujeme
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memset(name,0,SIZE);
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// Vypocitame zaciatok mena
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// Jedno miesto za medzerou
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char* start_name = end + 1; //urcenie zaciatku mena
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// Velkost mena je pocet znakov do konca retazca
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// minus koniec riadka
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int name_size = strlen(start_name) - 1; //urcenie konca mena
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if (name_size > 0){
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// nakopirujeme
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memcpy(name,start_name,name_size);
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// Na konci je v poli name ulozeny retazec s menom
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// bez konca riadka a s nulou na konci
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}
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else {
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printf( "nepodarilo sa nacitat meno \n");
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return 1;
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}
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*/
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//prejde vsetky polozky v databaze
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int id = find_student(databaza,size,name);
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if (id< 0){
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if (size < SIZE){
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memcpy(databaza[size].name,name,name_size);
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databaza[size].votes = value;
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size++;
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}
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else{
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printf("databaza je plna\n");
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return 1;
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}
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}
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else {
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databaza[id].votes = value;
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}
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printf("Vysledky:\n");
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for (int i = 0; i < size; i++){
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printf ("%d %s\n", databaza[i].votes, databaza[i].name);
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}
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return 0;
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} |