修改后代码如下
#include<stdio.h>
#include<stdlib.h>
#include<time.h>
int main()
{
int n,a[4],key[100],b[100],k=0;
char c[3];
void scan();//该函数用于与用户交互，获取输入数据
void randomNumber(int a[]);//用于随机生成数字
void randomOperation(char c[]);//用于随机生成运算符
void generateExpression(int a[],int key[],int b[],char c[],int n);//用于生成运算式
int caculate(int a[4],char c[3]);//用于计算生成的运算式的结果
int caculate1(char c,int a1,int a2);//用于判断运算符
void judge(int key,int b);//用于判断答案正确与否
void print(int key[],int b[],int n);//将统计结果输出给用户
scan();//引用用户交互函数
scanf("%d",&n);
randomNumber(a);//引用随机数生成函数
randomOperation(c);//引用随机字符生成函数
generateExpression(a,key,b,c,n);//引用算式生成函数
print(key,b,n);//统计结果函数
return(0);
}
void scan()
{
int l,ch;
FILE *fp;
printf("please type the language:\n");
printf("1.English\n2.中文\n3.Deutsch\n4.Francais\n5.日本語\n");
scanf("%d",&l);
if(l==1)
{
if((fp = fopen("W:\\English.txt", "r")) != NULL)
while((ch = fgetc(fp)) != EOF)
putchar(ch);
else
printf("fail to open! \n");
fclose(fp);
}
if(l==2)
{
if((fp = fopen("W:\\中文.txt", "r")) != NULL)
while((ch = fgetc(fp)) != EOF)
putchar(ch);
else
printf("fail to open! \n");
fclose(fp);
}
if(l==3)
{
if((fp = fopen("W:\\Deutsch.txt", "r")) != NULL)
while((ch = fgetc(fp)) != EOF)
putchar(ch);
else
printf("fail to open! \n");
fclose(fp);
}
if(l==4)
{
if((fp = fopen("W:\\Francais.txt", "r")) != NULL)
while((ch = fgetc(fp)) != EOF)
putchar(ch);
else
printf("fail to open! \n");
fclose(fp);
}
if(l==5)
{
if((fp = fopen("W:\\日本語.txt", "r")) != NULL)
while((ch = fgetc(fp)) != EOF)
putchar(ch);
else
printf("fail to open! \n");
fclose(fp);
}
}
void randomNumber(int a[])
{
int j;
srand((unsigned)time(NULL));
for(j=0;j<4;j++)
a[j]=rand()%11;
}
void randomOperation(char c[])
{
int j;
char c1[3]={'+','-','*'};
srand((unsigned)time(NULL));
for(j=0;j<3;j++)
c[j]=c1[rand()%3];
}
int caculate(int a[4],char c[3])
{
int i,t=0,h=1;
for(i=0;i<3;i++)
{
if(c[i]=='*')
{
a[i]=a[i]*a[i+1];
a[i+1]=0;
t=i;
h=i;
}
break;
}
for(i=t+1;i<3;i++)
{
if(c[i]=='*')
{
if(i==h+1&&t==h)
{
a[t]=a[t]*a[i+1];
a[i+1]=0;
h++;
}
else
{
t=i;
h=i;
a[t]=a[t]*a[i+1];
a[i+1]=0;
}
}
}
for(i=0;i<3;i++)
{
switch(c[i])
{
case'+':a[i+1]=a[i]+a[i+1];break;
case'-':a[i+1]=a[i]-a[i+1];break;
default:a[i+1]=a[i]+a[i+1];break;
}
}
return(a[i]);
}
int caculate1(char c,int a1,int a2)
{
int a;
switch(c)
{
case'+':a=a1+a2;break;
case'-':a=a1-a2;break;
case'*':a=a1*a2;break;
}
return(a);
}
void judge(int key,int b)
{
if(key==b)
printf("Congratulations, your answer is correct!\n");
else
printf("Sorry, your answer is wrong!\n");
}
void generateExpression(int a[],int key[],int b[],char c[],int n)
{
int a1,i;
srand((unsigned)time(NULL));
for(i=0;i<n;i++)
{
a1=rand()%4;
if(a1==0)
{
printf("%d%c%d%c%d%c%d=",a[0],c[0],a[1],c[1],a[2],c[2],a[3]);
key[i]=caculate(a,c);
scanf("%d",&b[i]);
judge(key[i],b[i]);
}
if(a1==1)
{
printf("%d%c%d%c(%d%c%d)=",a[0],c[0],a[1],c[1],a[2],c[2],a[3]);
a[2]=caculate1(c[2],a[2],a[3]);
a[3]=0;
c[2]='+';
key[i]=caculate(a,c);
scanf("%d",&b[i]);
judge(key[i],b[i]);
}
if(a1==2)
{
printf("(%d%c%d)%c%d%c%d=",a[0],c[0],a[1],c[1],a[2],c[2],a[3]);
a[0]=caculate1(c[0],a[0],a[1]);
a[1]=0;
c[0]='+';
key[i]=caculate(a,c);
scanf("%d",&b[i]);
judge(key[i],b[i]);
}
if(a1==3)
{
printf("(%d%c%d)%c(%d%c%d)=",a[0],c[0],a[1],c[1],a[2],c[2],a[3]);
a[0]=caculate1(c[0],a[0],a[1]);
a[1]=0;
c[0]='+';
a[2]=caculate1(c[2],a[2],a[3]);
a[3]=0;
c[2]='+';
key[i]=caculate(a,c);
scanf("%d",&b[i]);
judge(key[i],b[i]);
}
}
}
void print(int key[],int b[],int n)
{
int i,k=0;
for(i=0;i<n;i++)
{
if(key[i]==b[i])
k=k+1;
}
printf("correct number:%d\n",k);
printf("wrong number:%d",n-k);
}
