乘以整数（c ++） [英] Multiply char by integer (c++)
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问题描述
是否可以用一个int乘以一个char？
Is it possible to multiply a char by an int?
例如，我试图创建一个图形， 。
For example, I am trying to make a graph, with *'s for each time a number occurs.
这样的东西，但这不行。
So something like, but this doesn't work
char star = "*";
int num = 7;
cout << star * num //to output 7 stars
推荐答案
I wouldn 't调用操作乘法，这只是混乱。连接是一个更好的词。
I wouldn't call that operation "multiplication", that's just confusing. Concatenation is a better word.
在任何情况下，名为 std :: string 的C ++标准字符串类都有一个构造函数，
In any case, the C++ standard string class, named std::string, has a constructor that's perfect for you.
string ( size_t n, char c );
内容被初始化为由字符 c ， n 次。
Content is initialized as a string formed by a repetition of character c, n times.
所以你可以这样走：
char star = '*';
int num = 7;
std::cout << std::string(num, star) << std::endl;
确保包含相关标题< string> 。
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