C++ 随机数与随机种子数的实例
实现效果图:
实例代码:
#include <stdlib.h> #include <iostream> #include <ctime> using namespace std; void Test() { int ran_num = 0; cout<<"不指定seed, "; for(int i=0; i<10;i++) { ran_num = rand()%6; cout<<ran_num<<" "; }//每次运行都将输出:5,5,4,4,5,4,0,0,4,2 srand(1); cout<<"\n指定seed为1, "; for(int i=0; i<10;i++) { ran_num = rand()%6; cout<<ran_num<<" "; }//每次运行都将输出:5,5,4,4,5,4,0,0,4,2 srand(6); cout<<"\n指定seed为6, "; for(int i=0; i<10;i++) { ran_num = rand()%6; cout<<ran_num<<" "; }//每次运行都将输出:5,5,4,4,5,4,0,0,4,2 srand((unsigned)time(NULL)); cout<<"\n指定seed当前系统时间, "; for(int i=0; i<10;i++) { ran_num = rand()%6; cout<<ran_num<<" "; }//每次运行结果都不一样 } int main() { Test(); return 0; }感谢阅读,希望能帮助到大家,谢谢大家对本站的支持!