Implement a function
char* readLine();
which returns single lines from a buffer. To read the buffer, you can makes use of a function
int read(char* buf, int len)
which fills buf with upto len chars and returns the actual number of chars filled in. Function readLine can be called as many times as desired. If there is no valid data or newline terminated string available, it must block. In order to block, it can use read function which in turn will block when it doesn't have anything to fill the buf.

Question

Implement a function
char* readLine(); 
which returns single lines from a buffer. To read the buffer, you can makes use of a function
int read(char* buf, int len)
which fills buf with upto len chars and returns the actual number of chars filled in. Function readLine can be called as many times as desired. If there is no valid data or newline terminated string available, it must block. In order to block, it can use read function which in turn will block when it doesn't have anything to fill the buf.

not-stupid · Accepted Answer

are you stupid?

Princ · Answer

// this code makes an assumption that the max line length is 1000 chars
// assuming each line has a maximum length of 1000
char* readLine()
{
    // allocate one more char for terminating character
    char* buf = new char[1001];
    int numRead = read(buf, 1000);
    buf[numRead] = '
';
}

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