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  1. #include <stdio.h>
  2.  
  3. int main(){
  4.     int n;
  5.     scanf("%d\n",&n);
  6.     int arr[100][100];
  7.     int num=1;
  8.     int a,b;
  9.     int m=0;
  10. 	int N=n;
  11.     while (n>0){
  12. 		if(a>=0 && b>=0){
  13. 			for (; b<n; b++){
  14. 				arr[a][b]=num;
  15. 				num++;
  16. 			}
  17. 			b--;
  18. 			a++;
  19.         }
  20.  
  21. 		if(a>=0 && b>=0){
  22. 			for (; a<n; a++){
  23. 				arr[a][b]=num;
  24. 				num++;
  25. 			}
  26. 			a--;
  27. 			b--;
  28. 		}
  29.  
  30. 		if(a>=0 && b>=0){
  31. 			for (; b>=m; b--){
  32. 				arr[a][b]=num;
  33. 				num++;
  34. 			}
  35. 			a--;
  36. 			b++;
  37. 		}
  38.  
  39. 		if(a>=0 && b>=0){
  40. 			for (; a>m; a--){
  41. 				arr[a][b]=num;
  42. 				num++;
  43. 			}
  44. 			a++;
  45. 			b++;
  46. 		}
  47. 		n--;
  48. 		m++;
  49. 	}
  50.  
  51.     for (int i=0; i<N; i++){
  52.         for (int j=0; j<N; j++){
  53.             printf("%d ",arr[i][j]);
  54.         }
  55.         printf("\n");
  56.     }
  57.  
  58.     return 0;
  59. }
Success #stdin #stdout 0s 5440KB
comments (?)
stdin
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4
stdout
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0 0 0 0 
0 0 0 0 
0 0 0 0 
0 0 0 0
https://ideone.com/lzzyDl
language:
C (gcc 8.3)
created:
2 years ago
visibility:
public

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