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May 25th, 2018
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C 0.38 KB | None | 0 0
  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. int main(int argc, char** argv){
  5.     int n, i, j;
  6.     scanf("%d", &n);
  7.     for(i=0;i<n;i++){
  8.         for(j=0;j<n;j++){
  9.             if(i==0||i==n-1||j==0||j==n-1){
  10.                 printf("X");
  11.             }
  12.             else{
  13.                 printf("*");
  14.             }
  15.         }
  16.         printf("\n");
  17.     }
  18.    
  19.     return 0;
  20. }
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