Why does C++ allow an integer to be assigned to a string? -

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I had an interesting situation today in such a program where I unknowingly provided an unsigned integer for a std :: string Specified. The VisualStudio C ++ compiler did not make any warnings or errors about it, but I noted the bug when I started the project and it gave me junk characters for my string.

This is a code like this: 

  std :: string my_string (""); Unsigned int my_number = 1234; My_string = my_number;

The following code also compiles exactly: 

  std :: string my_string (""); Unsigned int my_number = 1234; My_string.operator = (my_number);

The following results in an error: 

  unsigned int my_number = 1234; Std :: string my_string (my_number);

What's going on? How the compiler will stop the build with the previous code block, but let's create the first 2 code blocks?

Because the string is assigned from char , and Int is variable over variable on char .


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