四则运算程序

printf("请输入您要做题的数量=");
scanf("%d",&k);
for(i=1;i<=k;i++)
{
printf("%d",m=rand()%9);
printf("+");
printf("%d",n=rand()%9);
printf("=");
}
}
};
void chengchuoperation()
{int m,n,s,total,k,i=1,q;
printf("请输入您要做题的数量=");
scanf("%d",&k);
while(i<=k)
{
m=rand()%9;
n=1+rand()%9;
{printf("恭喜你，答对了！\n");right++;}
else
{printf("回答错误！\n");wrong++;}
}
else {
printf("%d",m);
printf("-");
printf("%d",n);
printf("=");
i++;
if(s==total)
{printf("恭喜你，答对了！\n");right++;}
else
{printf("回答错误！\n");wrong++;}
}
}
};
void mixedoperation()
{int m,n,s,total,k,i,q,x,l;
printf(" *3.乘法练习* ");
printf(" *4.除法练习* ");
printf(" ");
printf(" 快选择你要学习的内容吧！ ");
total=m+n;
scanf("%d",&s);/*输入通过题目计算出的答案*/
if(s==total)
{printf("恭喜你，答对了！\n");right++;}
else
{printf("回答错误！\n");wrong++;}
}
printf("********************************************************************************");/*功能选项*/
}
void clearscreen()
{getchar();
}
void add()
{
int m,n,s,total,k,i;
#include<stdio.h>
#include<stdlib.h>
#include<time.h>
int right=0,wrong=0;
struct student
{ char num[12];
char name[20];
char sex;
char subject[30];
printf("^_^_^_^_^_^_^_^_^_^_^_^^__^_Merry christmas to you!!!_^_^_^_^_^_^_^_^_^_^_^_^_^^");
printf(" ");
else
{printf("回答错误！\n");wrong++;}
}
else{
printf("%d",m);
printf("-");
printf("%d",n);
printf("+");
printf("%d",q=rand()%9);
}
};
void div()
{int m,n,s,total,k,i=1;
printf("请输入您要做题的数量=");
scanf("%d",&k);
while(i<=k)
{
m=rand()%9;
n=1+rand()%9;
if(m%n==0)
{ printf("%d",m);
else
{printf("回答错误！\n");wrong++;}}
}
};
void jiajianoperation()
{int m,n,s,total,k,i,q,x;
printf("请输入您要做题的数量=");
scanf("%d",&k);
for(i=1;i<=k;i++)
printf(" ");
printf("^_^_^_^_^_^_^_^_^_^_^_^_^_^_^_^_^_^_^_^_^_^_^_^_^_^_^_^_^_^_^_^_^_^_^_^_^_^_^_^_");
{
m=rand()%9;
n=rand()%9;
if(m<n)
{x=m;
m=n;
n=x;
printf("(");
printf("%d",m);
printf("-");
printf("%d",n);
printf(")");
total=m-n;
scanf("%d",&s);/*输入通过题目计算出的答案*/
if(s==total)
{printf("恭喜你，答对了！\n");right++;}
else
{printf("回答错误！\n");wrong++;}
}
}
printf("/");
printf("%d",n);
printf("=");
total=m/n;
scanf("%d",&s);/*输入通过题目计算出的答案*/
i++;
if(s==total)
{printf("恭喜你，答对了！\n");right++;}
}
void minus()
{int m,n,x=0,s,total,k,i;
printf("请输入您要做题的数量=");
scanf("%d",&k);
for(i=1;i<=k;i++)
{
m=rand()%9;
n=rand()%9;
if(m<n)
{x=m;
}student1={"20091201066","wangzhengzheng",'M',"计算机科学与技术<师范>)"};//初始化
void menu()
{
printf("********************************************************************************");
printf("+");
printf("%d",q=rand()%9);
printf("=");
total=(m-n)+q;
scanf("%d",&s);/*输入通过题目计算出的答案*/
if(s==total)
{printf("恭喜你，答对了！\n");right++;}
printf("%d",&s);/*输入通过题目计算出的答案*/
if(s==total)
{printf("恭喜你，答对了！\n");right++;}
else
{printf("回答错误！\n");wrong++;}
printf("=");
total=m-n+q;
scanf("%d",&s);/*输入通过题目计算出的答案*/
if(s==total)
{printf("恭喜你，答对了！\n");right++;}
else
{printf("回答错误！\n");wrong++;}
printf(" *1.加法练习* ");
printf(" *2.减法练习* ");
};