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");
}
}



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