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  • [C++ 平时小练习] 写一个函数gene 用于输出正整数的全部因子,例如当k=126时,如下格式输出126=2*3*3*7

    写的比较乱。

    #include <iostream>
    
    using namespace std;
    
    int* gene(int);
    
    int main()
    {
    	cout << "Please enter the num you want to get it yizi: ";
    	int num ;
    	cin >> num;
    	int* yiziarray;
    	yiziarray= gene(num);
    	int index = 0;
    
    	cout << num << " = ";
    	while (*(yiziarray+index ))
    	{
    		cout << *(yiziarray+index ) ;
    		index ++;
    		if (*(yiziarray+index ))
    		{
    			cout << " * ";
    		}
    	}
    	cout << endl;
    	delete yiziarray;
    	return 0;
    }
    
    int* gene(int num)
    {
    	//int yinzi[10] ;
    	int* yinzi = new int[10];
    	int index = 0;
    	int loopnum = num;
    	int i =2;
    	for (; i <= loopnum / 2 ; )
    	{
    		if (num % i == 0)
    		{
    			yinzi[index] = i;
    			num = num / i ;
    			i = 2;
    			index ++;
    		}
    		else
    		{
    			i++;
    		}
    	}
    	yinzi[index] = '\0';
    
    	return yinzi;
    }
    
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  • 原文地址:https://www.cnblogs.com/lovepurple/p/2985730.html
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