c++ sorusu yardım

 
  #include <iostream> 
  #include<iomanip> 
  #include <cmath> 
   
   
  using namespace std; 
   
   
  int main() 
  { 
      const int N=51; 
      int n,indeks; 
      int sayac=0;	 
      char dizi[N]={0}; 
  	 
   
        cout<<"Lutfen karakter dizisini giriniz(max:50 karakter)"<<endl; 
        cout<<flush; 
        cin.getline(dizi,N); 
  	 
        n=strlen(dizi); 
  	 
        indeks=sqrt((double)n); 
  	 
        if((pow((double)indeks,2))<n) 
  		indeks++; 
   
  	for(int i=0;i<indeks;i++) 
  	{ 
  		cout<<endl; 
  		 
                for(int j=0;j<indeks;j++) 
  			 
  		{ 		 
  			if(sayac>n) 
  			break; 
                         
                          cout<<setw(2)<<dizi[j+i*indeks]; 
  			sayac++; 
  			 
   
  		} 
   
  	}	 
   
  	cout<<endl;     
  	 
  	system("pause"); 
   
  	return 0; 
  } 
   
  

 
   
  #include<iostream> 
  #include<iomanip> 
   
   
  #define ASAGI    0      
  #define SOL      1      
  #define YUKARI   2     
  #define SAG      3 
   
  using namespace std; 
   
  void spiralMatrix(char dizi[],int i) 
  { 
   
  	//dolduralacak kisim 
   
     
   
   
  } 
   
  void goster(char dizi[],int boyut) 
  { 
   
  	int sayac=0; 
  	int k=0; 
   
  	while( (k*k)<boyut) 
  	{	 
  		k++;	 
  	} 
   
  	if((k*k)<boyut) 
  		k++; 
   
   
  	for(int i=0;i<k;i++) 
  	{ 
  		cout<<endl; 
   
  		for(int j=0;j<k;j++) 
   
  		{ 		 
  			if(sayac>boyut) 
  				break; 
   
  			cout<<setw(2)<<dizi[j+i*k]; 
  			sayac++; 
  		} 
  	} 
  } 
   
   
   
  int main() 
  { 
   
   
  const int N=51; 
   
  int n; 
  char dizi[N]={0}; 
   
   
      cout<<"Lutfen karakter dizisini giriniz(max:50 karakter)"<<endl; 
      cout<<flush; 
   
      cin.getline(dizi,N); 
      n=strlen(dizi); 
   
      spiralMatrix(dizi,n); 
      goster(dizi,n); 
   
      cout<<endl;  
   
      system("pause"); 
  	return 0; 
  } 
   
   
  

 
   
  #include<iostream> 
  #include<iomanip> 
   
  using namespace  std;; 
   
   
  #define DOWN    0     
  #define LEFT    1     
  #define UP      2     
  #define RIGHT   3	   
   
  // 
  #define N   20      
   
  void printMatrix(int *a[], int n) 
  {      
  	int i, j; 
  	for (i = 0;i<n; i++)  
  	{ 
  		for (j=0; j<n;j++)  
  		{ 
  			cout<<setw(4)<<a[i][j]; 
  		} 
  		cout<<endl<<endl; 
  	} 
  } 
   
  void spiralMatrix(int *a[], int n)  
  { 
  	int i, j;    
  	int count;  
  	int direct;   
  	i=0; 
  	j=--n; 
  	count=0; 
  	direct=DOWN; 
  	while(n>0)  
  	{ 
  		for(int k=0;k<n;k++){ 
  			a[i][j]=count++; 
  			switch(direct){ 
  			case DOWN: 
  				i++; 
  				break; 
  			case LEFT: 
  				j--; 
  				break; 
  			case UP: 
  				i--; 
  				break; 
  			case RIGHT: 
  				j++; 
  				break; 
  			} 
  		} 
  	 
  		if (direct==RIGHT)  
  		{ 
  			i++; 
  			j--; 
  			n-=2; 
  		} 
  	 
  		direct=(direct+1)%4; 
  	} 
  	if(n==0)  
  		a[i][j]=count; 
  } 
   
  void main(void) { 
  	int m[N][N]={0}; 
  	int *a[N]; 
  	for(int i=0;i<N;i++)  
  		a[i]=m[i]; 
  	cout<<"nxn matrix girin(1<n<20)n="<<endl; 
  	int n; 
  	cin>>n; 
  	if(n>19||n<2) 
  	{ 
  		cout<<"bye!"; 
  		exit(0); 
  	} 
  	spiralMatrix(a, n); 
  	printMatrix(a, n); 
   
  	system("pause"); 
  }