练习1 四则运算题目的程序

#include<stdio.h>

#include<stdlib.h>

#include<string.h>

main()

{

    int i,cd,j;

    int cc,kh,ykh,zkh;

    int n,cz,count=0,count1=0;

    char ys[4][1]={"+","-","*","/"};

    char khs[4][1]={"","(","",")"};

    printf("请输入生成题目的数量");

    scanf("%d",&n);

    printf("是否有乘除法(1有 2没有)");

    scanf("%d",&cc);

//  printf("是否有括号(1有 2没有)");

//  scanf("%d",&kh);

    printf("请输入数值范围:");

    scanf("%d",&cz);

    if(cc==1) cc=4; else cc=2;

    for(i=0;i<n;i++)

    {cd=2+rand()%4;

        for(j=0;j<cd-1;j++)

            printf("%d %1c ",rand()%cz,ys[rand()%cc][0]);

        printf(" %d = \n",rand()%cz);

    }

}