1 /* 2  * Main.c 3  * F2-结构-02. 有理数加法 4  *  Created on: 2014年8月25日 5  ********测试通过********* 6  */ 7  8 #include <stdio.h> 9 /**10  * 有理数结构体11  */12 struct rationalNumber{13         int numerator;14         int denominator;15     };16 /**17  * 最大公约数18  */19 int greatCommonDivisor(int m,int n){20     int i;21     for(i=(m<n?m:n);i>1;i--){22         if(m%i==0&&n%i==0)23             break;24     }25     return i;26 }27 28 int main(void){29 30     struct rationalNumber num1,num2,num3;31     scanf("%d/%d %d/%d",&num1.numerator,&num1.denominator,&num2.numerator,&num2.denominator);32 33     //通分求和并赋值于num334     num3.numerator =num1.numerator*num2.denominator + num2.numerator*num1.denominator;35     num3.denominator = num1.denominator*num2.denominator;36 37     //约分38     int gcd = greatCommonDivisor(num3.numerator,num3.denominator);39     num3.numerator/=gcd;40     num3.denominator/=gcd;41 42     //输出结果43     if(num3.denominator==1)44         printf("%d\n",num3.numerator);45     else46         printf("%d/%d\n",num3.numerator,num3.denominator);47 48     return 0;49 }