74 lines
2.1 KiB
C
74 lines
2.1 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#define MAX_NAME_LENGTH 100
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#define MAX_BUFFER_LENGTH 256
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// Structure to store student information
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typedef struct {
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char name[MAX_NAME_LENGTH];
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int votes;
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} Student;
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// Comparison function for sorting students by votes and name
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int compare_students(const void *a, const void *b) {
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const Student *student_a = (const Student *)a;
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const Student *student_b = (const Student *)b;
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// First compare by number of votes
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if (student_a->votes != student_b->votes) {
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return student_b->votes - student_a->votes; // Sort in descending order
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}
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// If votes are tied, compare lexicographically by name
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return strcmp(student_a->name, student_b->name);
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}
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int main() {
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// Initialize array to store students
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Student students[MAX_BUFFER_LENGTH];
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int num_students = 0;
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// Read votes from standard input
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char buffer[MAX_BUFFER_LENGTH];
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while (fgets(buffer, sizeof(buffer), stdin) != NULL) {
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// Read number of votes and student's name
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int votes;
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char name[MAX_NAME_LENGTH];
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if (sscanf(buffer, "%d %99[^\n]", &votes, name) != 2) {
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fprintf(stderr, "Error: Invalid input format.\n");
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return 1;
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}
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// Store student in array
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strncpy(students[num_students].name, name, MAX_NAME_LENGTH);
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students[num_students].votes = votes;
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num_students++;
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// Check for exceeding maximum number of students
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if (num_students >= MAX_BUFFER_LENGTH) {
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fprintf(stderr, "Error: Too many students.\n");
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return 1;
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}
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}
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// Print error message if no records were retrieved
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if (num_students == 0) {
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fprintf(stderr, "Error: No records retrieved.\n");
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return 1;
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}
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// Sort students by number of votes and name
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qsort(students, num_students, sizeof(Student), compare_students);
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// Print results
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printf("Results:\n");
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for (int i = 0; i < num_students; i++) {
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printf("%d %s\n", students[i].votes, students[i].name);
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}
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return 0;
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}
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