6_13.cpp

C程序参考,简单易懂,是初学者不可少的参考资料

#include<stdio.h>
#include<math.h>
  main()
  {
      int m,n,i,j,a,b=0;
      printf("Please input two numbers: \n");
      scanf("%d,%d",&m,&n);
      printf("%d ~ %d prime numbers are: \n",m,n);
      for(i=m;i<=n;i++)
      {
          a=sqrt(i);
          for(j=2;j<=a;j++)
              if(i%j==0)
                  break;
          if(j>=a+1&&i!=1)
          {
              printf("%5d",i);
              b=b+1;
          }
          if(b%10==0)
              printf("\n");
    }
}