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);

}

}