cpp_references

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Description

Use C++ references to define the character pointer char *p in the main function, then malloc to request space (size 100 bytes) within the subfunction, read the string via fgets(), and finally output it in the main function; note: you must use C++ References in the subfunction, and to read the string from standard input in C++, you need to use fgets(p,100,stdin).

Input

Enter a string, such as I love C language.

Output

If the input is I love C language, then the output is I love C language.

Solution

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#include <bits/stdc++.h>
using namespace std;

void allocateAndReadString(char*& str)
{
    str = static_cast<char*>(malloc(100));
    fgets(str,100,stdin);
}

int main()
{
    char *p;
    allocateAndReadString(p);
    cout << p << endl;
    free(p);
    return 0;
}