Thread: Simple question (for you not for me!)

Hi
I want to make a programm that takes a text line from the keyboard, and then I want to use the line as a parameter in a function.
Here is my code:

Code:

#include <stdio.h>
main()
{
char line;
scanf("%s",line);

/*NOW USE THE TEXT LINE WHILE CALLING A FUNCTION*/
}

This code just names line the first word of the line, not the whole line!!!
What can I do?
I tried getchar, in a while and stored the text in a array, but I get segmentations and don't know how to use tha whole array as a parameter in my function.

Thx for your help,
antonis

Code:

#include <stdio.h>
main()
{
char *line;
scanf("%s",&line);

/*NOW USE THE TEXT LINE WHILE CALLING A FUNCTION*/
printf("%s",&line);

Here,
but I still get just the first word of the text.

I use the assigment operator at printf because else I get segmentation. But actually I dont need to read and write a line(so printf is not actually needed), I can do this by another way:

Code:

while(c=getchar()!='\n'){putchar(c);}

or smth like that. I need to use the whole line as a parameter in a function.
I don't want a whole word but a whole line of text consisting of more words. for example if i type:
antonis has just finished his post,
and use line as a parameter in my function, It only uses the word antonis. And the function is OK, I am sure about this.

1. Problem: You need to reserve memory for your line of text. Do that either by creating an array or by using malloc() together with your char *line.
2. Problem: You will not get more than the first word of your input when using scanf(). To read a complete line use fgets().

Read your manual on how to use the functions I mentioned.

try using std::cin.getline(line, 256); That should get you the whole line instead of just the first word. The reason for this in scanf is because it registers a space as an EOF delimiter or '\0', it's mainly made for parsing files. std::cin.getline() will get you the text until the enter key is pressed.

@Quantum:Your code gives this while compiling

Code:

/home/plutonas/tmp/ccADhe1V.o(.text+0x2a): In function `main':
: warning: the `gets' function is dangerous and should not be used.

and for fgets, I understand that it has toread from a file

@durban: what do the std::cin. mean with std::cin.getline(line, 256);it doesnt get compiled. When using just getline(line, 256); I get segmentation immidiatelly when I run the prog.

Thanks barnzey it now worked. Just one more question stdin means it reads from the keyboard????

Code:

        else if (l=='b'){
                /*Dialog to insert a new line before current line.*/
                printf("Insert the new line:\nTEEDI>");
                fgets(newline, MAXLINE,stdin);
                InsertBefore(buffer, newline);
        }

here there is the code in my programm. I don't get a prompt to write the line! Why???? How can I fix it?