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Re:呵呵,还好,知道错了,高手能不能讲讲,getchar,和 scanf(%c) 的效果有什么不同?为什么改用 scanf(%c)就能过了

Posted by neverend at 2007-08-05 16:54:37 on Problem 2105
In Reply To:呵呵,还好,知道错了,高手能不能讲讲,getchar,和 scanf(%c) 的效果有什么不同?为什么改用 scanf(%c)就能过了 Posted by:sunmoonstar_love at 2005-06-12 00:16:32
#include"iostream"
#include"math.h"
using namespace std;
int main()
{
	char str[32];
	int i=0,j=0,n,sum,k;
	scanf("%d",&n);
	for( k=0;k<n;k++)
	{
		sum=0;
   	    scanf("%s",str);
		for(i=0;i<32;i++)
		{
			
			if(0<=i&&i<8&&str[i]!='0')
				sum+=pow(2,7-i);
			else if(8<=i&&i<16&&str[i]!='0')
				sum+=pow(2,15-i);
			else if(16<=i&&i<24&&str[i]!='0')
				sum+=pow(2,23-i);
			else if(24<=i&&i<32&&str[i]!='0')
				sum+=pow(2,31-i);
			j++;
			if(j%8==0)
			{
				printf("%d",sum);
				sum=0;
				if(i<24)
					printf(".");
				else
					printf("\n");
			}
		
		}
	}
	return 0;
}
这个程序是AC了的,但用gets(str)代scanf("%s",str);程序就会有问题。。。。

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