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  1. #include <stdio.h>
  2.  
  3. int main(){
  4.     int n;
  5.     printf("Enter the number: \n");
  6.     scanf("%d",&n);
  7.     for(int i=1;i<=n;i++){
  8.       for(int j=1;j<=n;j++){
  9.           if(j==1||j==n || i==1||i==n)
  10.             printf("*");
  11.           else printf(" ");
  12.       }
  13.         printf("\n");
  14.      }
  15.  
  16. 	return 0;
  17. }
  18.  
Success #stdin #stdout 0.01s 5288KB
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stdin
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4
stdout
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Enter the number: 
****
*  *
*  *
****
https://ideone.com/qTDmND
language:
C (gcc 8.3)
created:
4 days ago
visibility:
public

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