利用C语言开发一个小学生算术四则运算测试系统

/************************************

CopyRight

Dragonpaopao

************************************/

#include

#include

#include

int

question_get();

int

type;

void

main(

void

)

{

int

answer;

srand(

(unsigned)time(

NULL

)

);

printf(

请选择要进行测试的题目种类:

);

printf(

\n1.加法\n2.减法\n3.乘法\n4.除法\n

);

scanf(

%d,

&type

);

while(

1

)

{

int

temp;

char

flag;

answer

=

question_get();

printf(

请给出你的答案:\n

);

fflush(

stdin

);

scanf(

%d,

&temp

);

while(

temp!=answer

)

{

printf(

\n答案错误,重做\n

);

fflush(

stdin

);

scanf(

%d,

&temp

);

}

printf(

\n答案正确,很好\n

);

printf(

继续请按1，退出请按0\n

);

fflush(

stdin

);

scanf(

%c,

&flag

);

while(

flag!='0'

&&

flag!='1'

)

{

printf(

继续请按1，退出请按0\n按其它键无效\n

);

fflush(

stdin

);

scanf(

%c,

&flag

);

}

if(

flag=='0'

)

break;

}

}

int

question_get()

{

int

a,b,c;

if(

type==1

)

{

a=rand()%999;

b=999-a;

b=rand()%b;

printf(

%d

+

%d

=

?,

a,

b

);

return(a+b);

}

else

if(

type==2

)

{

b=rand()%999;

c=999-b;

c=rand()%c;

printf(

%d

-

%d

=

?,

b+c,

b

);

return(c);

}

else

if(

type==3

)

{

a=rand()%500;

b=1000/a;

b=rand()%b;

printf(

%d

*

%d

=

?,

a,

b

);

return(a*b);

}

else

{

b=rand()%500;

c=1000/b;

while(

1

)

{

c=rand()%c;

if(

c!=0

)

break;

}

printf(

%d

/

%d

=

?,

b*c,

b

);

return(c);

}

}