随机数

随机数函数#include <cstdio>#include <ctime>#include <time.h>#include <cstdlib>using namespace std;double radom()         //生成[0,1]之间的均匀随机数{    return (double)rand()/RAND_MAX;}//int random(int m)//{//    return (int)(random()*(m-1)+0.5);//}int main(){    int n,m, i, j, x;    srand(time(NULL));    //散播随机种子（头文件需要time.h和stdlib.h）    n = rand()%100 +1;    //产生1到100的随机数并赋值给n    m = rand()%100 +1;//    freopen("in.txt","r",stdout);    printf("%d %d\n",n,m);//    scanf("%d",&n);    for(i=0; i<n; i++){    for(j=0; j<m; j++)    {        x = rand()%100000;        printf("%d ",x);    }    printf("\n");    }    return 0;}