C语言 一直输出0是为什么

这个为什么一直输出0.000000

#include
int main()
{
    int sex;
    float moHeight,faHeight,Height1,Height2,Height3;
    char judge1,judge2;
    printf("please input moHeight,faHeight,your child's sex 1 boy/0 girl\n");
    scanf("%f,%f,%f",&moHeight,&faHeight,&sex);
    switch(sex)
    {
    case1:Height1=(faHeight+moHeight)*0.54;break;
    case0:Height1=(faHeight*0.923+moHeight)/2;
    }
    printf("if you love sports Y/N\n");
    getchar();
    scanf("%c",&judge1);
    switch(judge1)
    {
    case'Y':Height2=1.02*Height1;break;

    }
    printf("if you have a healthy diet Y/N\n");
    getchar();
    scanf("%c",&judge2);
    switch(judge2)
    {
    case'Y':Height3=1.015*Height2;break;
    
    }
    printf("your child's height is %f",Height3);
return 0;
 }

11和12行case后面应该有空格，还有一些bug，帮你优化了一下
#include<stdio.h>
int main()
{
int sex;
float moHeight,faHeight,Height1,Height2,Height3;
char judge1,judge2;
printf("please input moHeight,faHeight,your child's sex 1 boy/0 girl\n");

if(3 != scanf("%f,%f,%d",&moHeight,&faHeight,&sex))
{
    printf("Input error.\n");
    return -1;
}

printf("mo:%.2f,fa:%.2f,sex:%d\n",moHeight,faHeight,sex);
switch(sex)
{
    case 1:
        Height1=(float)(faHeight+moHeight)*(float)0.54;
        break;
    case 0:
        Height1=(faHeight*0.923+moHeight)/2;
        break;
    default:
        printf("Input error.\n");
    return -1;
}
printf("H1 %f\n",Height1);

printf("if you love sports Y/N\n");
getchar();
scanf("%c",&judge1);
switch(judge1)
{
    case'Y':Height2=1.02*Height1;
        break;
    case'N':Height2=Height1;
        break;
    default:
        printf("Input error.\n");
    return -1;
}
printf("H2 %f\n",Height2);

printf("if you have a healthy diet Y/N\n");
getchar();
scanf("%c",&judge2);
switch(judge2)
{
    case'Y':Height3=1.015*Height2;
        break;
    case'N':Height3=Height2;
        break;
    default:
        printf("Input error.\n");
    return -1;
}

printf("your child's height is %f\n",Height3);
return 0;

}

输入的格式是1.0,2.0,3.0这种格式吗