Pascal Triangle using 2D array
 //Pascal Triangle ....   #include<stdio.h>   int main()  {  int ar[10][10],m,n,i,j;  printf("\nenter the height of the pascal triangle : ");  scanf("%d",&m);   for(i=0;i<m;i++)  for(j=0;j<m;j++)  {  if(j==0)  ar[i][j]=1;  else  ar[i][j]=0;  }  for(i=1;i<m;i++)  {  for(j=1;j<=i;j++)  {  ar[i][j]=ar[i-1][j-1]+ar[i-1][j];  }  }  printf("\nPscal Triangle will look like : \n");  for(i=0;i<m;i++)  {  for(j=0;j<20-i;j++)  printf(" ");  for(j=0;j<=i;j++)  printf("%2d",ar[i][j]);  printf("\n");  }  }     O/P:      

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