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还有什么情况没考虑么?WHY WA??附代码#include<iostream.h>
#include<string.h>
int main()
{
char a[10];
char b[10];
while(cin>>a>>b)
{
if(a[0]=='0'&&b[0]=='0')return 0;
int n1=strlen(a);
int n2=strlen(b);
int n;
if(n1>n2)n=n2;
else
n=n1;//求出较小者的位数
int k=0,h=0;
for(int i=0;i<n;i++)
{
int x=a[n1-1-i]-48;
int y=b[n2-1-i]-48;
if(x+y+h>=10)
{
k++;
h=1;
}
else
h=0;
}//分别从末尾向前走,计进的位数
int j=0;//计 如1+9999 时的可能进位
if(n1>n2&&h==1)
{
for(i=n1-1-n;i>=0;i--)
{
if(a[i]=='9')j++;
else
break;
}
}
else
if(n1<n2&&h==1)
{
for(i=n2-1-n;i>=0;i++)
{
if(b[i]=='9')j++;
else
break;
}
}
k+=j;//计算最终进位
if(k==0)cout<<"No carry operation."<<endl;
else
{
if(k==1)cout<<"1 carry operation."<<endl;
else
cout<<k<<" carry operations."<<endl;//对0,1和其他这三种情况分别处理
}
}
return 0;
}
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