pvjc19cv5/anketa.c

#include "anketa.h"
#include <stdlib.h>
#include <string.h>
#include <assert.h>

int count_students(struct student* students){
	int i;    	
	for(i=0; i<MAXSTUDENTS; i++){
		if(students[i].votes<0){
			break;
			}
	}
return i;
}

int search(struct student* students,const char* name){
	int index=-1; 
	for(int i=0; i<MAXSTUDENTS; i++){
		if(strcmp(students[i].name,name)==0){
			index=i;
			break;
		}  
	} 
	return index;
}

int add_student(struct student* students, const char* name, int votes){
	int index=-1, x=0;
   	for(int i=0; i<MAXSTUDENTS; i++){
		if(strcmp(students[i].name,name)==0){
			index=i;
			break;
			}
		if(students[i].name!=NULL){
			x++;
		}	
	}
	
	if(index!=-1){
		students[index].votes+=votes;
		return index;
	}
	
	 if(x<(MAXSTUDENTS-1)){
		strcpy(students[x].name,name);
		students[x].votes=votes;
		return x;
	}
	

 return -1;
}

int compare(const void* s1,const void* s2){
      	struct student* stud1=(struct student*)s1;
      	struct student* stud2=(struct student*)s2;
	return stud1->votes==stud2->votes?0:stud1->votes<stud2->votes?1:-1;
}

void sort_students(struct student* students){
	qsort(students, count_students(students), sizeof(struct student), compare);
}

void print_students(struct student* students){
	for(int i=0;i<count_students(students);i++){
		if(students[i].name!=NULL){
			printf("%s\n %d\n", students[i].name, students[i].votes);
		}
	}
}

void read_students(FILE* file,struct student* students){
	char meno[100];
	int body;
	do{
	fscanf(file,"%s",&meno[0]);
	fscanf(file,"%d",&body); 
	if(add_student(students,meno,body)==-1){
		break;
	}	
	}while(meno[0]=EOF);	

}