设计一个可供小学生数学运算测试程序

#include

#include

#include

#includeconio.h

intsum,tt;

intrnd0(intx1,intx2)

{intr;staticintn=1;

r=random(3);

switch(r)

{case0:printf(%d）%d+%d=,n++,x1,x2);break;

case1:printf(%d）%d-%d=,n++,x1,x2);break;

case2:printf(%d）%d*%d=,n++,x1,x2);break;

}

returnr;

}

intrnd1()

{intr;

r=random(10);

returnr;

}

intrnd2()

{intr;

r=random(10);

returnr;

}

intcrut(intx1,intfh,intx2)

{intasn;

switch(fh)

{case0:asn=x1+x2;break;

case1:asn=x1-x2;break;

case2:asn=x1*x2;break;

}

returnasn;

}

intvs(intm1,intm2)

{intr,zq;r=random(3);

if(m1==m2){zq=1;

switch(r)

{case0:printf(Verygood!);break;

case1:printf(Excellent!);break;

case2:printf(Keepupthegoodword!);break;

}

}

else{zq=0;

switch(r)

{case0:printf(No.Pleasetryagain);break;

case1:printf(WrongTryoncemore);break;

case2:printf(Nokeeptrying);break;

}

}

getch();clrscr();returnzq;

}

main()

{intx1,x2,ans,cru,js,tj,i;

intfh;

ld:printf(输入题目数量（1-10）:);

scanf(%d,&tt);if(tt10){printf(请重新输入\n);getch();clrscr();

gotold;}

randomize();

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

{

x1=rnd1();

x2=rnd2();

fh=rnd0(x1,x2);

scanf(%d,&ans);cru=crut(x1,fh,x2);

js=vs(ans,cru);

sum+=js;

}

tj=sum/tt*100;

printf(准确率:%d％\n,tj);

if(tj<75)

printf(Pleaseaskyourinstructorfopeextrahelp);

getch();

}