#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#define MAX 30
#define MAXKIDS 128

typedef struct{
	char i[MAX];
	char p[MAX];
	int g;
} Student;

void swap(Student niz[], int i, int j)
{
	char tmpi[MAX], tmpp[MAX];
	int tmpg = niz[i].g;
	niz[i].g = niz[j].g;
	niz[j].g = tmpg;
	strcpy(tmpi, niz[i].i);
	strcpy(niz[i].i, niz[j].i);
	strcpy(niz[j].i, tmpi);
	strcpy(tmpp, niz[i].p);
	strcpy(niz[i].p, niz[j].p);
	strcpy(niz[j].p, tmpp);
}

void check(Student niz[], int n)
{
	int i;
	for(i=1; i<n+1; i++)
		printf("%s %s %d \n",niz[i].i, niz[i].p, niz[i].g );
}

void sort(Student niz[], int n)
{
	int state, i;
	do {
	state = 0;
	for(i=0; i<n; i++)
		if(niz[i].g>niz[i+1].g)
		{
			swap(niz, i, i+1);
			state=1;
		}
	} while (state);
	printf("\n");
	check(niz, n);
}



int printout(char *in)
{
	FILE *in_file = fopen(in, "r");
	if(!in_file)
	{
		printf("Datoteka nije uspeno otvorena!\n", in);
		exit(-1);
	}
	int c, counter=1;
    while ((c = getc(in_file)) != EOF)
    {
    	putchar(c);
    	if(c=='\n')
    		counter++;
	}
    putchar('\n');
    close(in_file);
	return counter;
}

void sortkids(char *in, char *out, int n)
{
	FILE *in_file = fopen(in, "r");
	FILE *out_file = fopen(out, "w");
	Student niz[MAXKIDS];
	int i, tmp[MAXKIDS];
	if(in_file==NULL || out_file==NULL)
	{
		printf("Datoteka nije uspeno otvorena!\n", in);
		exit(-1);
	}
	for(i=1; i<n; i++)
		fscanf(in_file, "%s %s %d\n",&niz[i].i, &niz[i].p, &niz[i].g);
	sort(niz, n);
	for(i=1; i<n; i++)
		fprintf(out_file, "%s %s %d\n",niz[i].i, niz[i].p, niz[i].g);
	close(in_file);
	close(out_file);
}
int main(int argc, char *argv[])
{
	if(argc!=3)
	{
		printf("Greska u pozivu!\n");
		system("pause");
		return -1;
	}
	char *in=argv[1], *out=argv[2];
	int counter=printout(in);
	sortkids(in, out, counter);
	system("pause");
}