//parcurgerea matricei in spirala
#include<iostream.h>
#include<stdio.h>
#include<conio.h>
FILE*f;
int g(int &k)
{
int i,gata=0,s=0,aux=0;
i=k;
while(gata==0)
{
gata=0;
s=0;
aux=i;
while(aux!=0){
s=s+aux%10;
aux=aux/10;
}
if(s%5==0)
gata=1;
i++;
}
k=i-1;
return k;
}
void main()
{
int a[20][20],n,i,j,k;
clrscr();
f=fopen("matrice.txt","r");
/*fscanf(f,"%d",&n);
for(i=0;i<n;i++)
for(j=0;j<n;j++)
fscanf(f,"%d",&a[i][j]);*/
cout<<"Dati n=";
cin>>n;
k=13;
for(i=0;i<n;i++)
{
for(j=i;j<n-i;j++)
a[i][j]=g(++k);
for(j=i+1;j<n-i;j++)
a[j][n-1-i]=g(++k);
for(j=n-i-2;j>i;j--)
a[n-1-i][j]=g(++k);
for(j=n-i-1;j>i;j--)
a[j][i]=g(++k);
}
for(i=0;i<n;i++) {
for(j=0;j<n;j++)
cout<<a[i][j]<<" ";
cout<<endl;
}
fclose(f);
getch();
}
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