求身高问题
#include "stdio.h"
void main()
{
 float faheight,moheight,myheight;
 char sex,sport,diet;
  printf("faheight and moheight:\n");
 scanf("% f,% f",&faheight,&moheight);
 printf("are you a boy(y/n):\n");
 scanf("%c",&sex);

 printf("do you like sports:(y/n)\n");
 scanf("% c",&sport);
 printf("do you have healthy diet(y/n):\n");
 scanf("% c",&diet);
 
 
 if(sex=='m'||sex=='M')
 myheight=(faheight+moheight)*0.54;
 else
 myheight=(faheight*0.923+moheight)/2;
 if(sport=='y'||sport=='Y')
 myheight=myheight*(1+0.02);
 if(diet=='y'||diet=='Y')
 myheight=myheight*(1+0.015);
 printf("myheight=%f\n",myheight);
 
}

又是接收回车符的问题吧。

具体怎么改呢？

原来是输入字符的scanf 函数中的空格位置不对。scanf("%  c")给为scanf("  %c")
正确程序为
#include "stdio.h"
void main()
{
 float faheight,moheight,myheight;
 char sex,sport,diet;
  printf("faheight:\n");
 scanf("%f",&faheight);
 printf("moheight:\n");
 scanf("%f",&moheight);
 printf("are you a boy(y/n):\n");
 scanf(" %c",&sex);

 printf("do you like sports:(y/n)\n");
 scanf(" %c",&sport);
 printf("do you have healthy diet(y/n):\n");
 scanf(" %c",&diet);
 
 
 if(sex=='Y'||sex=='y')
 myheight=(faheight+moheight)*0.54;
 else
 myheight=(faheight*0.923+moheight)/2.0;
 if(sport=='Y'||sport=='y')
 myheight=myheight*(1+0.02);
 if(diet=='Y'||diet=='y')
 myheight=myheight*(1+0.015);
 printf("myheight=%f\n",myheight);
 
}