用c语言编写小学生四则运算!答:int randd(void);int randd1(void);int rand1(void);int rand2(void);float randf(float a,float b);main(){ float i,k,a,b;int x,c,du=0,cu=0,j,w,f;srand(time(NULL));printf("选择难度\n");printf("1是1位数 2是2位数\n");printf("目前只支持3位数\n");scanf("%d...
用c语言实现儿童100以内的四则运算自动生成10道题目,答:int main(void){ int i,a,b,addsub,answer=0,score=0;randomize();for(i=0; i<10; i++) { a=rand()%100;addsub=rand()%2;if(addsub)b=rand()%(100-a);else b=rand()%a;printf("%d%c%d=",a,addsub?'+':'-',b);scanf("%d",&answer);if(answer==(addsub?a+b:a...