减慢 for 循环的速度

slowing the speed of for loop

本文关键字：速度 循环 for 减慢      更新时间：2023-10-16
for(;;) {
    int rand_number = rand() % 2;
    cout << rand_number;
}

这些循环像矩阵电影 （LOL） 一样在屏幕上生成 1 和 0，但代码执行速度非常快，有什么方法可以让数字缓慢出现吗？

使用 Sleep(3000); 等待 3000 毫秒例如

#include <iostream>
#include <stdlib.h>
#include <Windows.h>
using namespace std;
int main(int argc,char**argv){
    cout<<"a"<<endl;
    Sleep(3000);
    cout<<"b"<<endl;
    return 0;
}

查看usleep . 你也可以使用睡眠，但我想那会太慢了。

USLEEP(3)                BSD Library Functions Manual                USLEEP(3)
NAME
     usleep -- suspend thread execution for an interval measured in microseconds
LIBRARY
     Standard C Library (libc, -lc)
SYNOPSIS
     #include <unistd.h>
     int
     usleep(useconds_t useconds);
DESCRIPTION
     The usleep() function suspends execution of the calling thread until either useconds microseconds have elapsed or a signal is delivered to the thread whose action
     is to invoke a signal-catching function or to terminate the thread or process.  The actual time slept may be longer, due to system latencies and possible limita-
     tions in the timer resolution of the hardware.
     This function is implemented, using nanosleep(2), by pausing for useconds microseconds or until a signal occurs.  Consequently, in this implementation, sleeping
     has no effect on the state of process timers and there is no special handling for SIGALRM.
RETURN VALUES
     The usleep() function returns the value 0 if successful; otherwise the value -1 is returned and the global variable errno is set to indicate the error.
ERRORS
     The usleep() function will fail if:
     [EINTR]            A signal was delivered to the process and its action was to invoke a signal-catching function.
SEE ALSO
     nanosleep(2), sleep(3)
HISTORY
     The usleep() function appeared in 4.3BSD.
BSD                            February 13, 1998                           BSD

如果你只是想让它停止，直到你准备好，你可以随机放入一个毫无意义的cin。它只会在那里等待输入，直到您按回车键。

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