c语言最大公约数和最小公倍数怎么表示

2025-02-06 17:50:10
推荐回答(5个)
回答1:

最大公约数和求最小公倍数

1、对两个正整数a,b如果能在区间[a,0]或[b,0]内能找到一个整数temp能同时被a和b所整除,则temp即为最大公约数。

2、对两个正整数a,b,如果若干个a之和或b之和能被b所整除或能被a所整除,则该和数即为所求的最小公倍数。

穷举法求两数的最大公约数

int divisor(int a,int b)

{

int temp;//定义义整型变量

temp=(a>b)?b:a;//采种条件运算表达式求出两个数中的最小值

while(temp>0){

if(a%temp==0&&b%temp==0)//只要找到一个数能同时被a,b所整除,则中止循环

break;

temp--;//如不满足if条件则变量自减,直到能被a,b所整除

}

return temp;//返回满足条件的数到主调函数处

}

//穷举法求两数的最小公倍数

int multiple(int a,int b)

{

int p,q,temp;

p=(a>b)?a:b;//求两个数中的最大值

q=(a>b)?b:a;//求两个数中的最小值

temp=p;//最大值赋给p为变量自增作准备

while(1){//利用循环语句来求满足条件的数值

if(p%q==0)

break;//只要找到变量的和数能被a或b所整除,则中止循环

p+=temp;//如果条件不满足则变量自身相加

}

return p;

}

扩展资料:

while使用示例

C++

int a=NULL;

while(a<10)

{

a++;//自加

if(a>5)//不等while退出循环,直接判断循环

{

break;//跳出循环

}

}

结果:结束后a的值为6。

Javascript

下面的例子定义了一个循环程序,这个循环程序的参数i的起始值为0。该程序会反复运行,直到i大于10为止。i的步进值为1。

<html>

<body>

<script type="text/javascript">

var i=0

while(i<=10)

{document.write("The number is"+i);

document.write("<br/>");

i=i+1;}

</script>

</body>

</html>

结果

The number is0

The number is1

The number is2

The number is3

The number is4

The number is5

The number is6

The number is7

The number is8

The number is9

The number is10

参考资料:

百度百科——while

回答2:

#include

int main()

{

int a,b,c,m,t;

printf("请输入两个数:\n");

scanf("%d%d",&a,&b);

if(a

{

t=a;

a=b;

b=t;

}

m=a*b;

c=a%b;

while(c!=0)

{

a=b;

b=c;

c=a%b;

}

printf("最大公约数是:\n%d\n",b);

printf("最小公倍数是:\n%d\n",m/b);

}

扩展资料

算法思想

利用格式输入语句将输入的两个数分别赋给 a 和 b,然后判断 a 和 b 的关系,如果 a 小于 b,则利用中间变量 t 将其互换。

再利用辗转相除法求出最大公约数,进而求出最小公倍数。最后用格式输出语句将其输出。

#include是在程序编译之前要处理的内容,称为编译预处理命令。编译预处理命令还有很多,它们都以“#”开头,并且不用分号结尾,所以是c语言的程序语句。

回答3:

辗转相除法求最大公约数和最小公倍数
有两整数a和b:
① a%b得余数c
② 若c=0,则b即为两数的最大公约数
③ 若c≠0,则a=b,b=c,再回去执行①

回答4:

辗转相除法求最大公约数和最小公倍数
有两整数a和b:

① a%b得余数c

② 若c=0,则b即为两数的最大公约数

③ 若c≠0,则a=b,b=c,再回去执行①

例如求27和15的最大公约数过程为:

27÷15 余1215÷12余312÷3余0因此,3即为最大公约数

#include
void main() /* 辗转相除法求最大公约数 */
{
int m, n, a, b, t, c;
printf("Input two integer numbers:\n");
scanf("%d%d", &a, &b);
m=a; n=b;
while(b!=0) /* 余数不为0,继续相除,直到余数为0 */
{ c=a%b; a=b; b=c;}
printf("The largest common divisor:%d\n", a);
printf("The least common multiple:%d\n", m*n/a);
}

回答5:

输入两个正整数m和n,求其最大公约数和最小公倍数.用辗转相除法求最大公约数算法描述:m对n求余为a,若a不等于0则m最小公倍数=两个数的积/最大公约数#includeintmain(){intm,n;intm_cup,n_cup,res;/*被除数,除数,余数*/printf("Entertwointeger:\n");scanf("%d%d",&m,&n);if(m>0&&n>0){m_cup=m;n_cup=n;res=m_cup%n_cup;while(res!=0){m_cup=n_cup;n_cup=res;res=m_cup%n_cup;}printf("Greatestcommondivisor:%d\n",n_cup);printf("Leasecommonmultiple:%d\n",m*n/n_cup);}elseprintf("Error!\n");return0;}

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