Question

写出用伪随机函数rand()产生一个两位正整数的C++表达式

Answer 1

int a = rand() % 100;
while(a < 10)
{
a = rand() % 100;
}
你非要两位，如果一位也可以就rand() % 100多简单

Answer 2

回答：
int a ;
a = (rand()%90+10);

Answer 3

int N=90;
int a=10+rand()%N;

Answer 4

10+rand()%90