Cod sursa(job #76041)

Utilizator emy2704S Octav emy2704 Data 7 august 2007 17:53:19
Problema Factorial Scor 15
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.36 kb
Raporteaza aceasta sursa 
#include<stdio.h>
int main()
{
unsigned int p=0, p2=0, p5=0, n=1;

FILE *f=NULL;
f=fopen("fact.in","r");
fscanf(f,"%d\n",&p);
fclose(f);

n=0;

do{
n++;
p2=p2+((n%2)?0:1);
p5=p5+((n%5)?0:1);
}while (p5<p);


f=fopen("fact.out","w");

n = ((!p)?1:n);
if ((p2==p) && (p2==p5))
fprintf(f, "%d", n);
else
fprintf(f,"-1");
fclose(f);
return 0;
}