递增指针数组 [英] incrementing array of pointers

问题描述

int main()
{
	students *s;
	int num=0;
	s=new students[num];
	char c;
	char stream[10],name[50];
	int year;
	double rollno;
	do
	{
		cout<<"enter the stream";
		cin>>stream;
		cout<<"enter the year of joining the college"<<endl;
		cin>>year;
		cout<<"enter your name";
		cin>>name;
		cout<<"enter your rollno";
		cin>>rollno;
		
		num++;
		cout<<"do you want to continue  (y/n)";
		cin>>c;
	}while(c!='n');
	cout<<num;
	return 0;
}

代码执行后我想获得num的值，但它没有显示任何内容

为什么？

错误是一个断点，表示无法读取位置'位置'访问不违反



thnx

after the code gets executed i want to get the value of "num" but it is showing nothing
why?
the error is a breakpoint which says "unable to read the location 'location' access not violation"

thnx

推荐答案

你没有解释你想要实现什么，但请注意你不要在循环中迭代任何东西。您只增加变量 num ，但它不会影响其他任何内容。您甚至不初始化数组变量，也从不索引它们。整个代码似乎没有任何意义。

-SA

You did not explain what did you want to achieve, but note that you don't iterate anything in your loop. You only increment the variable num, but it does not affect anything else. You don't even initialize array variables and never index them. The whole code does not seem to make any sense.

—SA

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