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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=0;
  9.     int b=0;
  10.     int m=0;
  11. 	int N=n;
  12.     while (n>0){
  13. 		if(a>=0 && b>=0){
  14. 			for (; b<n; b++){
  15. 				arr[a][b]=num;
  16. 				num++;
  17. 			}
  18. 			b--;
  19. 			a++;
  20.         }
  21.  
  22. 		if(a>=0 && b>=0){
  23. 			for (; a<n; a++){
  24. 				arr[a][b]=num;
  25. 				num++;
  26. 			}
  27. 			a--;
  28. 			b--;
  29. 		}
  30.  
  31. 		if(a>=0 && b>=0){
  32. 			for (; b>=m; b--){
  33. 				arr[a][b]=num;
  34. 				num++;
  35. 			}
  36. 			a--;
  37. 			b++;
  38. 		}
  39.  
  40. 		if(a>=0 && b>=0){
  41. 			for (; a>m; a--){
  42. 				arr[a][b]=num;
  43. 				num++;
  44. 			}
  45. 			a++;
  46. 			b++;
  47. 		}
  48. 		n--;
  49. 		m++;
  50. 	}
  51.  
  52.     for (int i=0; i<N; i++){
  53.         for (int j=0; j<N; j++){
  54.             printf("%d ",arr[i][j]);
  55.         }
  56.         printf("\n");
  57.     }
  58.  
  59.     return 0;
  60. }
Success #stdin #stdout 0s 5440KB
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https://ideone.com/Ne6I6v
language:
C (gcc 8.3)
created:
2 years ago
visibility:
public

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