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  1. #include<stdio.h> 
  2. int main(){
  3. 	int side, a, b; 
  4. 	printf("Enter side of square\n");
  5. 	scanf("%d", &side);
  6. 	for(a = 0; a < side; a++){
  7. 		for(b = 0; b < side; b++){
  8. 			if(a==0 || a==side-1 || b==0 || b==side-1)
  9. 				printf("*");
  10. 			else
  11. 				printf(" ");
  12. 		}
  13. 		printf("\n");
  14. 	}
  15. 	return 0;
  16. }
Success #stdin #stdout 0s 9432KB
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stdin
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10
stdout
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Enter side of square
**********
*        *
*        *
*        *
*        *
*        *
*        *
*        *
*        *
**********
https://ideone.com/2DtqvJ
language:
C (gcc 8.3)
created:
6 years ago
visibility:
public

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