C语言分数相加

完整的C程序：

#include "stdio.h"

typedef struct
{
        int numerator;          
        int denominator;                
} Fraction;

int GCD(int a,int b);
int LCM(int a,int b);
Fraction Add(Fraction f1, Fraction f2);

void main()
{
        Fraction f1, f2, f3;
        f1.numerator = 1;
        f1.denominator = 3;
        f2.numerator = 1;
        f2.denominator = 6;
        
        f3 = Add(f1, f2);
        
        printf("%d/%d + %d/%d = %d/%d\n", f1.numerator, f1.denominator, f2.numerator, f2.denominator, f3.numerator, f3.denominator);
}

Fraction Add(Fraction f1, Fraction f2)
{
        Fraction retValue;
        int lcm = LCM(f1.denominator, f2.denominator);  
        int gcd;
        
        retValue.denominator = lcm;
        retValue.numerator = f1.numerator * lcm / f1.denominator + f2.numerator * lcm / f2.denominator;
        gcd = GCD(retValue.numerator, retValue.denominator);
        retValue.numerator /= gcd;
        retValue.denominator /= gcd;
        return retValue;
}

int GCD(int a,int b)
{
        int i,temp_gcd;
        for(i=a;i>=1;i--)
        {
                if(a%i==0)
                {
                        if(b%i==0)
                        {
                                temp_gcd=i;
                                return temp_gcd;
                        }
                }
        }
}

int LCM(int a,int b)
{
        int temp_lcm;
        temp_lcm = a * b / GCD(a,b);
        return temp_lcm;
}

完整的C程序：

#include "stdio.h"

typedef struct
{
        int numerator;          
        int denominator;                
} Fraction;

int GCD(int a,int b);
int LCM(int a,int b);
Fraction Add(Fraction f1, Fraction f2);

void main()
{
        Fraction f1, f2, f3;
        f1.numerator = 1;
        f1.denominator = 3;
        f2.numerator = 1;
        f2.denominator = 6;
        
        f3 = Add(f1, f2);
        
        printf("%d/%d + %d/%d = %d/%d\n", f1.numerator, f1.denominator, f2.numerator, f2.denominator, f3.numerator, f3.denominator);
}

Fraction Add(Fraction f1, Fraction f2)
{
        Fraction retValue;
        int lcm = LCM(f1.denominator, f2.denominator);  
        int gcd;
        
        retValue.denominator = lcm;
        retValue.numerator = f1.numerator * lcm / f1.denominator + f2.numerator * lcm / f2.denominator;
        gcd = GCD(retValue.numerator, retValue.denominator);
        retValue.numerator /= gcd;
        retValue.denominator /= gcd;
        return retValue;
}

int GCD(int a,int b)
{
        int i,temp_gcd;
        for(i=a;i>=1;i--)
        {
                if(a%i==0)
                {
                        if(b%i==0)
                        {
                                temp_gcd=i;
                                return temp_gcd;
                        }
                }
        }
}

int LCM(int a,int b)
{
        int temp_lcm;
        temp_lcm = a * b / GCD(a,b);
        return temp_lcm;
}