编写一个能生成小学四则运算题目的运算

#include<stdio.h>

#include<stdlib.h>

#include<time.h>

int i=0,j=0;

 

void jia()

{

    int a,b,m;

    srand(time(NULL));

    a=1+rand()%100;

    b=1+rand()%100;

    printf("%d ",a);

    printf("%d ",b);

    printf("a+b=? ");

    printf("请输入运算结果 ");

    scanf("%d",&m);

    if(m==a+b)

    {

        printf("恭喜你答对了 ");

        i++;

    }

    else

    {

        printf("你答案有错误 ");

        j++;

    }

     

}

 

void jian()

{

    int a,b,m;

    srand(time(NULL));

    a=1+rand()%100;

    b=1+rand()%100;

    if(a<b)

    {

        int t=0;

        t=a;a=b;b=t;

    }

    printf("%d ",a);

    printf("%d ",b);

    printf("a-b=? ");

    printf("请输入运算结果 ");

    scanf("%d",&m);

    if(m==a-b)

    {

        printf("恭喜你答对了 ");

        i++;

    }

    else

    {

        printf("你答案有错误 ");

        j++;

    }

     

}

void cheng()

{

    int a,b,m;

    srand(time(NULL));

    a=1+rand()%20;

    b=1+rand()%20;

    printf("%d ",a);

    printf("%d ",b);

    printf("a*b=? ");

    printf("请输入运算结果 ");

    scanf("%d",&m);

    if(m==a*b)

    {

        printf("恭喜你答对了 ");

        i++;

    }

    else

    {

        printf("你答案有错误 ");

        j++;

    }

     

}

void chu()

{

    int a,b,m;

    srand(time(NULL));

    a=1+rand()%100;

    b=1+rand()%100;

    if(b==0)

    {

        b=1+rand()%100;

    }

    if(a<b)

    {

        int t=0;

        t=a;a=b;b=t;

    }

    while(a%b!=0)

    {

        a=1+rand()%100;

        b=1+rand()%100;

    }

    printf("%d ",a);

    printf("%d ",b);

    printf("a/b=? ");

    printf("请输入运算结果 ");

    scanf("%d",&m);

    if(m==a/b)

    {

        printf("恭喜你答对了 ");

        i++;

    }

    else

    {

        printf("你答案有错误 ");

        j++;

    }

     

}

<br>

int main()

{

    int m,n=0;

    while(1)

    {

        printf("1.加法运算 ");

        printf("2.减法运算 ");

        printf("3.乘法运算 ");

        printf("4.除法运算 ");

        printf("请选择");

        scanf("%d", &m);

        switch(m)

        {

        case 1:jia();break;

        case 2:jian();break;

        case 3:cheng();break;

        case 4:chu();break;

        }

        printf("5.请重新选择 ");

        printf("6.结束 ");

        scanf("%d", &n);

        if(n==6) break;

    }

    printf("你回答题的总数%d和正确的个数%d ",i+j,i);

    return 0;

}

 

加法运算界面

减法运算界面

 

乘法运算界面

除法运算界面
 

因为我的基础有限，所以自己写不出很严谨的运算程序，所以我借鉴了一下别的程序。做出了这套简单的四则运算程序！