3 Трета

#include <cstdio>
#include <string.h>

using namespace std;

int main()
{
    FILE *r = fopen("proizvodi.txt","r");
    FILE *w = fopen("zapishi.txt","w");

    int limit;
    scanf("%d",&limit);

    int temp;
    char ime[16];
    int lager;
    int cena;

    while(fscanf(r,"%d%s%d%d",&temp,ime,&lager,&cena) != EOF)
        if(cena > limit)
            fprintf(w,"%s\t%d\t%d\n",ime,lager,cena);

    return 0;
}