分数计算器用C语言如何实现？编程实现分数计算功能，要有四则运算的功能，使程序能正确识别并计算结果。

给个简单的程序你
#include

#include

typedef
struct
Fraction
{
int
m;
//分子
unsigned
int
d;
//分母
}F;
F
Addition(F
a,F
b);
//加法
F
Subtraction(F
a,F
b);
//减法
F
Multiplication(F
a,F
b);
//乘法
F
Division(F
a,F
b);
//除法
int
Getm(int
u,unsigned
int
v);//最大公约数
void
Output(F
c);//显示
void
main()
{
F
a,b,c;
a.m=-2;
a.d=5;
b.m=3;
b.d=7;
c=Addition(a,b);
Output(c);printf("\n");
c=Subtraction(a,b);
Output(c);printf("\n");
c=Multiplication(a,b);
Output(c);printf("\n");
c=Division(a,b);
Output(c);printf("\n");
}
F
Addition(F
a,F
b)
{
F
c;
int
t,t1;
unsigned
int
t2;
t1=a.m*b.d+a.d*b.m;t2=a.d*b.d;
t=Getm(abs(t1),t2);
c.m=t1/t;
c.d=t2/t;
return
c;
}
F
Subtraction(F
a,F
b)
{
F
c;
c.m=-b.m;
c.d=b.d;
return
Addition(a,c);
}
F
Multiplication(F
a,F
b)
{
F
c;
int
t,t1;
unsigned
int
t2;
t1=a.m*b.m;t2=a.d*b.d;
t=Getm(abs(t1),t2);
c.m=t1/t;
c.d=t2/t;
return
c;
}
F
Division(F
a,F
b)
{
F
c;
c.m=int(b.d);
c.d=unsigned
int(b.m);
if(b.m<0)
c.m=-c.m;
return
Multiplication(a,c);
}
int
Getm(int
m,unsigned
int
d)
{
int
t;
while(d!=0)
{
t=m%d;
m=d;
d=t;
}
return
m;
}
void
Output(F
c)
{
printf("%d",c.m);
if(c.d!=1)
printf("/%d",c.d);
}