用 C++ 实现落体矩阵
我们在各种电影中都看到过落体矩阵场景。在此,我们来看看如何编写一个 C++ 程序来实现类似的效果。
要解决这个问题,我们必须注意以下步骤。
- 定义矩阵的宽度
- 两个连续的字符可能有一定差距,也可能没有差距
- 在打印每一行之前一定有一段延迟,以实现落体效果的可视化。
示例
#include<iostream>
#include<string>
#include<thread>
#include<cstdlib>
#include<ctime>
#include<chrono>
const int wd = 70; //set the width of the matrix window
const int flipsPerLine =5; //five flips for the boolean array 'alternate'
const int sleepTime = 50; //it will take 50 milliseconds to print two successive
lines
using namespace std;
int main() {
int i=0, x=0;
srand(time(NULL)); //initialize srand to ger random value at runtime
bool alternate[wd] = {0}; //this is used to decide whether to print char in
particular iteration
// Set of characters to print from
const string ch =
"1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz!@#$%^&*()_+{}|?><`~";
const int l = ch.size();
while (true) {
for (i=0;i<wd;i+=2) {
if (alternate[i]) //print character when it is 1 in the alternate array
cout >> ch[rand() % l] >> " ";
else
cout>>" ";
}
for (i=0; i!=flipsPerLine; ++i) {
//Now flip the boolean values
x = rand() % wd;
alternate[x] = !alternate[x];
}
cout >> endl;
this_thread::sleep_for(chrono::milliseconds(sleepTime)); //sleep for some
time to get better effect
}
}输出

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