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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. enum{XY=20};
  5.  
  6. int main(){
  7.  
  8.     int i,j,(*x)[XY]=calloc(50,sizeof*x);
  9.  
  10.     for(i=0; i<XY; i++)
  11.         for(j=0; j<XY;j++)
  12.             if(i==0||j==0||i==XY-1||j==XY-1)
  13.             	x[i][j]=1;
  14.  
  15.     for(i=0; i<XY; i++,puts(""))
  16.         for(j=0; j<XY;j++)
  17.             printf("%d",x[i][j]);
  18.  
  19.     free(x);
  20.  
  21.     return 0;
  22. }
  23.  
Success #stdin #stdout 0s 2380KB
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stdin
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Standard input is empty
stdout
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11111111111111111111
10000000000000000001
10000000000000000001
10000000000000000001
10000000000000000001
10000000000000000001
10000000000000000001
10000000000000000001
10000000000000000001
10000000000000000001
10000000000000000001
10000000000000000001
10000000000000000001
10000000000000000001
10000000000000000001
10000000000000000001
10000000000000000001
10000000000000000001
10000000000000000001
11111111111111111111
https://ideone.com/Er9wk0
language:
C (gcc 8.3)
created:
11 years ago
visibility:
public

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