Question

I have main function like this:

void main()
{
     char *s;
     inputString(s);
     printf("%s",s);

}

and inputString function:

void inputString(char *&s)
{

    //Some code line to input a string and set s point to this string

}

Is there have a function auto malloc memory enough store string which inputed (I need input string in inputString function).

Answer 1

You’re mixing C and C++ in your example.

In your case before you can use s it should be initialized. For example, like this:

void inputString(char *&s)
{
    s = strdup(xxx); // or malloc, calloc, etc.

}

But really, then it’s better to just use plain old C:

char* inputString(void)
{
    char* s = strdup(xxx);
    return s;
}