#include<stdio.h>
#include<string.h>
#include<stdlib.h>
int gcd(int a,int b)//求最大公约数
{
	int t;
	if(a<b)
	{
		t=a;
		a=b;
		b=t;
	}
	if(a%b==0)return b;
	else
		return gcd(b,a%b);
}
int min(int a,int b)//求最小公倍数
{
	return a*(b/gcd(a,b));
}
void bb(char * str,int *n,int *m)
{
	int a,b,c,d,e;
	char ch;
	ch=str[3];
	a=str[0]-'0';
	b=str[2]-'0';
	c=str[4]-'0';
	d=str[6]-'0';
	e=min(b,d);
	a=a*(e/b);
	c=c*(e/d);
	*m=e;
	if(ch=='+') *n=a+c;
	if(ch=='-') *n=a-c;
	return ;
}
void out(int a,int b)
{
	int c;
	if(a==0){printf("%d\n",0);return ;}
	 c=gcd(a,b);
	if(c<0)c=-c;
	a=a/c;
	b=b/c;
	if(a==b){printf("%d\n",1);return ;}
	if(b==1){printf("%d\n",a);return ;}
	printf("%d/%d\n",a,b);
	return ;

}
int main(void)
{
	char str[20][10]={'\0'};
	int a[20]={0},b[20]={0},i=0,n;
	while(scanf("%s",str[i])!=EOF)
	{
		bb(str[i],&a[i],&b[i]);
		i++;
	}
	n=i;
	for(i=0;i<n;i++)
		out(a[i],b[i]);
	return 1;

}

• Re:怎么总是编译错误？ (1094) blank_bird 2011-02-19 02:01:22