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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. 	int n;
  5.     printf("Enter the number: \n");
  6.     scanf("%d",&n);
  7.       int a;
  8.     for(int i=1;i<=n;i++){
  9.            if(i%2==0) a=0;
  10.            else a=1; 
  11.       for(int j=1;j<=i;j++){
  12.            printf(" %d ",a);
  13.            if(a==0) a=1;
  14.            else a=0;
  15.  
  16.  
  17.       }
  18.          printf("\n");
  19.  
  20.     }
  21. 	return 0;
  22. }
  23.  
Success #stdin #stdout 0.01s 5288KB
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stdin
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7
stdout
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Enter the number: 
 1 
 0  1 
 1  0  1 
 0  1  0  1 
 1  0  1  0  1 
 0  1  0  1  0  1 
 1  0  1  0  1  0  1
https://ideone.com/fPgf4e
language:
C (gcc 8.3)
created:
20 days ago
visibility:
public

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