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  1. #include <stdio.h>
  2. int main(void) {
  3. int a, b, c, i, j, k=0;
  4. 	scanf("%d %d",&i,&j);
  5. 	for(a=1;a<=i;a++)printf("*");
  6. 	printf("\n");
  7.  
  8. 	for(b=1;b<=i-2;b++){printf("*");
  9.  
  10. 	for(c=1;c<=i-2;c++){k++;
  11. 	if(k%j==1)printf("*");
  12. 	else printf(" ");}
  13. 	printf("*\n");}
  14.  
  15. 	for(a=1;a<=i;a++)printf("*");
  16. 	printf("\n");
  17. 	return 0;}
Success #stdin #stdout 0s 9424KB
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stdin
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10 3
stdout
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**********
**  *  * *
* *  *  **
*  *  *  *
**  *  * *
* *  *  **
*  *  *  *
**  *  * *
* *  *  **
**********
https://ideone.com/et5hCU
language:
C (gcc 8.3)
created:
5 years ago
visibility:
public

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