C语言程序设计

C语言程序设计(A)

（20111-2012-1）

实验报告7

教学班级：冶金092 学号：04 姓名：徐荣辉课程教师：井福荣实验辅导教师：井福荣

一、实验前的源程序：

#include

float vol(int r)

{

float tj;

tj=(4*3.14*r*r*r)/3;

return tj;

}

int main();

{ int i;

float sum=0.0;

for(i=10;i<99;i++)

if(i%3==0)

sum+=vol(i);

printf("sum=%f",sum);

return 0;

}

实验错误报告：

--------------------配置: mingw2.95 - CUI Release, 编译器类型: MinGW (Old)--------------------

检查文件依赖性...

正在编译 D:\C-Free\C-Free Standard\temp\未命名2.cpp...

[Error] D:\C-Free\C-Free Standard\temp\未命名 2.cpp:9: parse error before `{'

[Error] D:\C-Free\C-Free Standard\temp\未命名 2.cpp:11: parse error before `for'

[Error] D:\C-Free\C-Free Standard\temp\未命名 2.cpp:11: parse error before `;'

[Error] D:\C-Free\C-Free Standard\temp\未命名 2.cpp:11: syntax error before `++'

[Error] D:\C-Free\C-Free Standard\temp\未命名 2.cpp:14: ANSI C++ forbids declaration `printf' with no type

[Error] D:\C-Free\C-Free Standard\temp\未命名 2.cpp:14: `int printf' redeclared as different kind of symbol

[Error] D:\C-Free\C-FREE~1\mingw32\Include\stdio.h:204: previous declaration of `int printf(const char *, ...)'

[Error] D:\C-Free\C-Free Standard\temp\未命名 2.cpp:14: initializer list being treated as compound expression

[Warning] D:\C-Free\C-Free Standard\temp\未命名 2.cpp:14: warning: initialization to `int' from `float'

[Error] D:\C-Free\C-Free Standard\temp\未命名 2.cpp:15: parse error before `return'

构建中止未命名2: 9 个错误, 1 个警告

修改后的源程序：

#include

float vol(int r)

{

float tj;

tj=(4*3.14*r*r*r)/3;

return tj;

}

int main()

{ int i;

float sum=0.0;

for(i=10;i<99;i++)

if(i%3==0)

sum+=vol(i);

printf("sum=%f",sum);

return 0;

}

实验前的源程序

#include

int main()

{

float ho=100,h=h0,s=0;

int i;

for( i=1;i<=10;i++)

{ s=s+h;

h=h/2.0;

}

printf("the total h is %f(m)\n",s);

printf("the total h is %f(m)",h);

return 0;

}

实验错误报告

--------------------配置: mingw2.95 - CUI Release, 编译器类型: MinGW (Old)--------------------

检查文件依赖性...

正在编译D:\C-Free\C-Free Standard\temp\未命名2.cpp...

[Error] D:\C-Free\C-Free Standard\temp\未命名2.cpp:4: `h0' undeclared (first use this function)

[Error] D:\C-Free\C-Free Standard\temp\未命名 2.cpp:4: (Each undeclared

identifier is reported only once

[Error] D:\C-Free\C-Free Standard\temp\未命名2.cpp:4: for each function it appears in.)

构建中止未命名2: 3 个错误, 0 个警告

修改后的源程序

#include

int main()

{

float h0=100,h=h0,s=0;

int i;

for( i=1;i<=10;i++)

{ s=s+h;

h=h/2.0;

}

printf("the total h is %f(m)\n",s);

printf("the total h is %f(m)",h);

return 0;

}