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Cod sursa(job #227614)
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main()
{
int n,a,y,t,i;
char c[105];
char d[3];
int e[20]={0,1,5,2,8,3,9,2,8,7,7,8,4,7,3,8,4,1,5,4};
FILE *f1,*f2;
f1=fopen("cifra.in","r");
f2=fopen("cifra.out","w");
fgets(c,104,f1);
y=strlen(c);
while((c[y-1]=='\n')||(c[y-1]=='\r'))
{
c[y-1]=0;
y=strlen(c);
}
y=strlen(c);
if(y>=2)
{
d[0]=c[y-2];
d[1]=c[y-1];
d[2]=0;
}
else if(y==1)
{
d[0]=c[y-1];
d[1]=0;
}
else
d[0]=0;
t=atoi(d);
for(i=1;i<=t;i++)
{
fgets(c,104,f1);
y=strlen(c);
while((c[y-1]=='\n')||(c[y-1]=='\r'))
{
c[y-1]=0;
y=strlen(c);
}
y=strlen(c);
if(y>=2)
{
d[0]=c[y-2];
d[1]=c[y-1];
d[2]=0;
}
else if(y==1)
{
d[0]=c[y-1];
d[1]=0;
}
else
d[0]=0;
n=atoi(d);
a=n/20;
n=n%20;
n=(e[n]+4*a)%10;
fprintf(f2,"%d\n",n);
}
fclose(f1);
fclose(f2);
return 0;
}