4c.c write a c program to display pascal triangle

#include<stdio.h>

int main()
{
int line,i,j;
printf("enter no of lines\n");
scanf("%d",&line);
for(i=0;i<line;i++)
{
for(j=0;j<line-i-1;j++)
printf(" ");
for(j=0;j<=i;j++)
printf(" %d",fact(i)/(fact(j)*fact(i-j)));
printf("\n");
}
return 0;
}
int fact(int num)
{
long f=1;
int i=1;
while(i<=num)
{
f=f*i;
i++;
}
return f;
}