View Code of Problem 103

#include<stdio.h>
#include<math.h>

int isrich(int k)
{
  if(k==1||k==0)
    return 0;
  for(int i=2;i<=sqrt(k);i++)
    if(k%i==0)
      return o;
  return 1;  
}

int main()
{
  int i,a,b;
  while(scanf("%d %d",&a,&b)!=EOF)
  {
    int sum=0;
    for(i=a;i<=b;i++)
    {
      if(isrich(i))
        sum++;
    }
    printf("%d\n",sum);
  }
  return 0;
}
/*
Main.c: In function 'isrich':
Main.c:10:14: error: 'o' undeclared (first use in this function)
       return o;
              ^
Main.c:10:14: note: each undeclared identifier is reported only once for each function it appears in
*/