rand() 函数 ，do-while()语句--经验

/*************************************************
 * int rand(void);
 * Gusse the number : *
 * *
 * *
 * *
 * ************************************************/
#include <stdio.h>
#include <stdlib.h>

int main()
{
     int iGusse , iSecret;
     iSecret = rand() % 10+1 ;
     printf("please enter the integer( from 1 to 10):");
     scanf( "%d", &iGusse);
    do{
        if( iGusse < iSecret )
        {
          printf( "the input integer is smaller!\n re-input:" );
          scanf( "%d", &iGusse );
        }
        else if( iGusse > iSecret )
        {
          printf( " the input integer is bigger! \n re-input: " );
          scanf( "%d" , &iGusse );
        }
        else
          { printf( "congratulations! " );}
    }while( iGusse != iSecret );

      return 0;
}


电脑上随机值是4，但是经过3,5,4输入后，并不显示congratulations
，原因是scanf( "%d" , &iGusse );语句，再重新输入后，并不执行
else
          { printf( "congratulations! " );}
而是重新一次循环。这时如果新的iGusse等于了iSecret，则不会再一次循环，故不会输出congratulations.
而应该这样的代码：



/*************************************************
 * int rand(void);
 * Gusse the number : *
 * *
 * *
 * *
 * ************************************************/


//#include

#include <stdio.h>
#include <stdlib.h>

int main()
{
     int iGusse , iSecret;
     iSecret = rand() % 10+1 ;
     printf("please enter the integer( from 1 to 10):");
     scanf( "%d", &iGusse);
    do{
        if( iGusse < iSecret )
        {
          printf( "the input integer is smaller!\n re-input:" );
          scanf( "%d", &iGusse );
        }
        else if( iGusse > iSecret )
        {
          printf( " the input integer is bigger! \n re-input: " );
          scanf( "%d" , &iGusse );
        }
    }while( iGusse != iSecret );

            printf( "congratulations!\n " );
      return 0;
}