Prog#150: display nth line

C Programming
#1 
/*
display nth line
Program#150
*/
#include<stdio.h>
main()
{
char a[50];
int i,j,b[50],n;
for(i=0;(a[i]=getchar())!='$';i++);
a[i]='\0';
j=0;
b[j++]=0;
for(i=0;a[i];i++);
{
if(a[i]=='\n')
b[j++]=i+1;
}
b[j]=-1;
scanf("enter line no. %d", &n);
for(i=b[n-1];a[i]!='\n'; i++);
printf("%c",a[i]);
}