---

void o(long int out)

{

int i=0;

for(i=0;i<out/1000;i++)

{

cout<<'M';

}

out=out%1000;

if(out>=900)

{

cout<<"CM";

out-=900;

}

if(out>=500)

{

cout<<"D";

out-=500;

}

if(out>=400)

{

cout<<"CD";

out-=400;

}

for(i=0;i<out/100;i++)

{

cout<<'C';

}

out=out%100;

if(out>=90)

{

cout<<"XC";

out-=90;

}

if(out>=50)

{

cout<<"L";

out-=50;

}

if(out>=40)

{

cout<<"XL";

out-=40;

}

for(i=0;i<out/10;i++)

{

cout<<'X';

}

out=out%10;

if(out>=9)

{

cout<<"IX";

out-=9;

}

if(out>=5)

{

cout<<"V";

out-=5;

}

if(out==4)

{

cout<<"IV";

out-=4;

}

for(i=0;i<out;i++)

{

cout<<'I';

}

cout<<endl;

}

int rome(char a)

{

int x;

switch(a)

{

case 'M':

x=1000;

break;

case 'D':

x=500;

break;

case 'C':

x=100;

break;

case 'L':

x=50;

break;

case 'X':

x=10;

break;

case 'V':

x=5;

break;

case 'I':

x=1;

break;

}

return x;

}

兩個是讀取十進制和輸出十進制

#提供無技術含量的

while((a=getchar())!='\n'&&a!=EOF&&a!=' '&&a!='#')

{

 

while((b=getchar())!='\n'&&b!=EOF&&b!=' ')

{

 

...

}

 

 

while((b=getchar())!='\n'&&b!=EOF&&b!=' ')

{

 

...

 

}

請誤直抄

如果想法是同思路的

記得單字元的情況

你會讀不到另一組字母