你好，我的程序上还是有些错，你能再帮我一下吗？

确实没找到错的地方.求教

我也不知道  

#include<stdio.h>
int main ()
{
    char sex,sports,diet;
    double faheight,moheight,height=0;
    printf("请输入性别，男性为：M，女性为：F  ：");
    scanf("%c",&sex);
    if(sex=='M')
    {
        printf("体育锻炼，喜爱：Y，不喜爱：N :");  
        fflush(stdin);
        scanf("%c",&sports);
        if(sports=='Y')
        {
            printf("饮食习惯，良好：Y，不好：N :");
            fflush(stdin);
            scanf("%c",&diet);
            if(diet=='Y')
            {            
               printf("父亲身高：，母亲身高:");
               fflush(stdin);
               scanf("%lf,%lf",&faheight,&moheight);
               height=(faheight+moheight)*0.54*1.035;
            }
               
            else if(diet=='N')
            {
                printf("父亲身高：，母亲身高:");
                fflush(stdin);
                scanf("%lf,%lf",&faheight,&moheight);
                height=(faheight+moheight)*0.54*1.02;
            }

        }
        else if(sports=='N')
        {
            printf("父亲身高：，母亲身高:");
            fflush(stdin);
            scanf("%lf,%lf",&faheight,&moheight);
            height=(faheight+moheight)*0.54;
        }
            
    }
    else if(sex=='F')
    {
        printf("体育锻炼，喜爱：Y，不喜爱：N :");
        fflush(stdin);
        scanf("%c",&sports);
        if(sports=='Y')
        {
            printf("饮食习惯，良好：Y，不好：N :");
            fflush(stdin);
            scanf("%c",&diet);
            if(diet=='Y')
            {
                printf("父亲身高：，母亲身高:");
                fflush(stdin);
                scanf("%lf,%lf",&faheight,&moheight);
                height=(faheight*0.923+moheight)*0.54*1.035;
            }
               
            else if(diet=='N')
            {
                printf("父亲身高：，母亲身高:");
                fflush(stdin);
                scanf("%lf,%lf",&faheight,&moheight);
                height=(faheight*0.923+moheight)*0.54*1.02;
            }
               
        }
        else if(sports=='N')
        {
            printf("父亲身高：，母亲身高:");
            fflush(stdin);
            scanf("%lf,%lf",&faheight,&moheight);
            height=(faheight*0.923+moheight)*0.54;
        }
            
    }
  printf("成人身高=%lf\n",height);
}

知道了

忘加空格了，