void add()
{
while(1)
{
float number1,number2,xuanxiang;
float add;
printf("请输入两个数字相加:");
scanf("%f%f",&number1,&number2);
add=number1+number2;
printf("%.2f+%.2f=%2.f\n",number1,number2,add);
printf("是否继续?,继续请按0,返回主菜单按1\n");
scanf("%d",&xuanxiang);
if(xuanxiang==1)
xunhuan;
}
}
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