执行不起来，麻烦高手看看，我照书上打的。。

#include<stdio.h>                               /*包含头文件*/
#define Height 10                               /*定义常量*/

int calculate(int Long,int Width);              /*函数声明*/

int main()                                      /*主函数main*/
{
       int m_Long;                              /*定义整型常量，表示长度*/
       int m_Width;                             /*定义整型常量，表示宽度*/
       int rsult;                               /*定义整型变量，表示长方体的体积*/

       printf("长方体的高度为：%d\n",Height);   /*显示提示*/


       printf("请输入长度\n");                  /*显示提示*/
       scanf("%d,"&m_Long);                     /*输入长方体长度*/

       printf("请输入宽度\n");                  /*显示提示*/
       scanf("%d\n",&m_Width);                  /*输入长方体宽度*/

       result=calculate(M_Long,m_Width);        /*调用函数，计算体积*/
       printf("长方体的体积是：");              /*显示提示*/
       printf("%d\n",result);                   /*输出体积大小*/
       return 0;                                /*返回整型0*/
}

       int calculate(int Long,int Width)        /*定义计算体积函数*/
{
       int result=Long*Width*Height;            /*具体计算体积*/
       return result;                           /*将计算的体积结果返回*/
}

int result;
scanf("%d", &m_Long);
result=calculate(m_Long,m_Width);

#include<stdio.h>                                         /*包含头文件*/
#define Height 10                                         /*定义常量*/
int calculate(int Long,int Width);              /*函数声明*/
int main()                                                  /*主函数main*/
{   
       int m_Long;                              /*定义整型常量，表示长度*/
       int m_Width;                             /*定义整型常量，表示宽度*/
       int result;                               /*定义整型变量，表示长方体的体积*/
       printf("长方体的高度为：%d\n",Height);   /*显示提示*/

       printf("请输入长度\n");                                /*显示提示*/
       scanf("%d",&m_Long);                                   /*输入长方体长度*/
       printf("请输入宽度\n");                             /*显示提示*/
       scanf("%d\n",&m_Width);                           /*输入长方体宽度*/
       result=calculate(m_Long,m_Width);        /*调用函数，计算体积*/
       printf("长方体的体积是：");              /*显示提示*/
       printf("%d\n",result);                   /*输出体积大小*/
       return 0;                                /*返回整型0*/
}
       int calculate(int Long,int Width)        /*定义计算体积函数*/
{
       int result=Long*Width*Height;            /*具体计算体积*/
       return result;                           /*将计算的体积结果返回*/
}

#include<stdio.h>                               /*包含头文件*/
#define Height 10                               /*定义常量*/

int calculate(int Long,int Width);              /*函数声明*/

int main()                                      /*主函数main*/
{
       int m_Long;                              /*定义整型常量，表示长度*/
       int m_Width;
       int m_Height;                            /*定义整型常量，表示宽度*/
       int result;                               /*定义整型变量，表示长方体的体积*/


       printf("\nplease input long:");                  /*显示提示*/
       scanf("%d",&m_Long);                     /*输入长方体长度*/

       printf("\nplease input width:");                  /*显示提示*/
       scanf("%d",&m_Width);                  /*输入长方体宽度*/
       result=calculate(m_Long,m_Width);        /*调用函数，计算体积*/

       printf("result=%d",result);                   /*输出体积大小*/

       getch();                                /*返回整型0*/
}

       int calculate(int Long,int Width)        /*定义计算体积函数*/
{
       int result=Long*Width*Height;            /*具体计算体积*/
       return result;
                                 /*将计算的体积结果返回*/
}
这样就可以了  你试一下。

我以前也是和你一样，c中必须要细心才行。呵呵 加油哦