求Fibonacci数列的前30项

# include "stdio.h"
int main(void)
{
  long a=1,b=1,c,i;
  printf("前30项为：%ld %ld",a,b);
  for(i=3;i<=30;i++)
  {
    c=a+b;
    a=b;
    b=c;
    printf("%ld",c);
  }
  printf("\n");
}