Question

难以理解整数n和k在raiseToPower函数中的用途。通常在定义函数时。我知道当它被调用时它如何以某种方式暂停主函数，但是变量n和k如何成为其中的一个因数？



#include <iostream>
using namespace std;
#include "simpio.h"
#include <string>

int raiseToPower(int n, int k);
//This created a variable called raiseToPower
//It has 2 integers that it can call upon, n and k
//This makes it possible for the function to be used without a definiton in the main


int main(){
//Indicates main is a integer

int limit;

//Limit is now a variable that can hold integers

cout << "This program lists powers of two." << endl;

//Tell the user that this is what the program does

cout << "Enter exponent limit: ";

//No endl, so that the user can input something

cin >> limit;

//This lets the user input a integer, and store it in limit

for (int i = 0; i <= limit; i++) {

    //creates a for loop that will do the action till it completes its work

    //While i = 0, and it is less then or equal to limit, add 1 to i

        cout << "2 to the " << i << " = " << raiseToPower(2, i) << endl;

}

return 0;

}

int raiseToPower(int n, int k) {
//creates variablee result that holds a integers, and in this case 1

    int result = 1;

// a for loop so that the

    for (int i=0; i < k; i++) {

       result *= n;

}

return result;
}

我的大部分问题都在上面的部分中。函数定义。我不明白在这里使用n和k的地方

Answer 1

raiseToPower是一个返回值的函数。

n和k是传递给raiseToPower函数的整数参数。 n被提升到k的位置。

为此，该函数通过从0到n-1循环，仅将k自身k的倍数乘以result *= n。这是通过

行完成的

result = result * n.

也可以写为

dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.android.support:appcompat-v7:28.0.0'
implementation 'com.android.support.constraint:constraint- 
 layout:1.1.3'
implementation 'com.android.support:design:28.0.0'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 
'com.android.support.test.espresso:espresso-core:3.0.2'

变量定义，初学者协助

1 个答案: