C程序最小公倍数得问题

显示全部楼层 · 2011-5-14 09:21:19

(1)#include\"stdio.h\"
voidmain()
{
inta,b,s;
printf(\"inputa=\");
scanf(\"%d\",
printf(\"inputb=\");
scanf(\"%d\",
s=a;
if(s%b==0)
printf(\"%d\",s);
elsewhile(s%b!=0)
s=sa;
printf(\"%d\",s);
}

(2)#include\"stdio.h\"
voidmain()
{
inta,b,s;
printf(\"inputa=\");
scanf(\"%d\",
printf(\"inputb=\");
scanf(\"%d\",
s=a;
while(a%s!=0||b%s!=0)
s--;
printf(\"s=%d\",s);
}

第一个求最小公倍数和第二个求最小公倍数算法上有什么区别?不仅仅是多了一条if语句吧.两种都可以得到答案吗?

千问 · 2011-5-14 09:21:19

两种都有问题：
(1)#include\"stdio.h\"
voidmain()
{
inta,b,s;
printf(\"inputa=\");
scanf(\"%d\",
printf(\"inputb=\");
scanf(\"%d\",
s=a;你默认了ab
if(s%b==0)
printf(\"%d\",s);
elsewhile(s%b!=0)
s=sa;
printf(\"%d\",s);
}

(2)#include\"stdio.h\"
voidmain()
{
inta,b,s;
printf(\"inputa=\");
scanf(\"%d\",
printf(\"inputb=\");
scanf(\"%d\",
s=a;改成s=(ab?a:b);
while(a%s!=0||b%s!=0)这是求最小公约数吧，while(s%a!=0||s%b!=0)s；
s--;
printf(\"s=%d\",s);
}

<h4class=\"ask\">追问

s=(ab?a:b);
我是新手..这句看得不太懂喔..

千问 · 2011-5-14 09:21:19

三目运算符?:(t1)?(t2):(t3)
意思是t1为真，执行t2，否则执行t3