Question

C语言：输入两个分数，计算它们的和。用a/b+c/d=x/y的形式。源程序

Answer 1

#include <stdio.h>
//求最大公约数方法
int maxCD(int m, int n)
{
int tem;

if(m < n)
{
tem = m;
m = n;
n = tem;
}

while(m % n != 0)
{
tem = m % n;
m = n;
n = tem;
}

return n;
}
void main()
{
int a,b,c,d;
printf("请输入a,b,c,\n");
scanf("%d%d%d%d", &a, &b, &c, &d);

int x = a * d + b * c;
int y = b * d;
if(x == 0)
printf("%d/%d+%d/%d=%d\n",a,b,c,d,0);
else{
//化简
int cd = maxCD(x, y);
x /= cd;
y /= cd;

if(y != 1)
printf("%d/%d+%d/%d=%d/%d\n",a,b,c,d,x,y);
else
printf("%d/%d+%d/%d=%d\n",a,b,c,d,x);
}
}